Home / 20,746.76-28,630.70-11,315.12

Finding the Fourth Proportional to 20,746.76, 28,630.70 and 11,315.12

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Solution

The fourth proportional to 20,746.76, 28,630.70 and 11,315.12 is: 15,614.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.76 : 28,630.70 = 11,315.12 : x
  2. Step 2: Convert to fraction form
    20,746.76/28,630.70 = 11,315.12/x
  3. Step 3: Cross multiply
    20,746.76x = 28,630.70 × 11,315.12
  4. Step 4: Simplify right side
    20,746.76x = 323,959,806.18
  5. Step 5: Solve for x
    x = 323,959,806.18/20,746.76
  6. Step 6: Final answer
    x = 15,614.96

Related Problems

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Half scale
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Double scale
Find fourth proportional to 20,747.76, 28,632.08 and 11,316.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.