Home / 20,746.88-28,630.72-11,316.16

Finding the Fourth Proportional to 20,746.88, 28,630.72 and 11,316.16

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Solution

The fourth proportional to 20,746.88, 28,630.72 and 11,316.16 is: 15,616.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.88 : 28,630.72 = 11,316.16 : x
  2. Step 2: Convert to fraction form
    20,746.88/28,630.72 = 11,316.16/x
  3. Step 3: Cross multiply
    20,746.88x = 28,630.72 × 11,316.16
  4. Step 4: Simplify right side
    20,746.88x = 323,989,808.44
  5. Step 5: Solve for x
    x = 323,989,808.44/20,746.88
  6. Step 6: Final answer
    x = 15,616.31

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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.