Home / 20,657.07-28,506.76-11,225.63

Finding the Fourth Proportional to 20,657.07, 28,506.76 and 11,225.63

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Solution

The fourth proportional to 20,657.07, 28,506.76 and 11,225.63 is: 15,491.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.07 : 28,506.76 = 11,225.63 : x
  2. Step 2: Convert to fraction form
    20,657.07/28,506.76 = 11,225.63/x
  3. Step 3: Cross multiply
    20,657.07x = 28,506.76 × 11,225.63
  4. Step 4: Simplify right side
    20,657.07x = 320,006,383.46
  5. Step 5: Solve for x
    x = 320,006,383.46/20,657.07
  6. Step 6: Final answer
    x = 15,491.37

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Half scale
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Double scale
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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.