Home / 15,613.74-21,547.38-8,540.04

Finding the Fourth Proportional to 15,613.74, 21,547.38 and 8,540.04

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Solution

The fourth proportional to 15,613.74, 21,547.38 and 8,540.04 is: 11,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.74 : 21,547.38 = 8,540.04 : x
  2. Step 2: Convert to fraction form
    15,613.74/21,547.38 = 8,540.04/x
  3. Step 3: Cross multiply
    15,613.74x = 21,547.38 × 8,540.04
  4. Step 4: Simplify right side
    15,613.74x = 184,015,487.10
  5. Step 5: Solve for x
    x = 184,015,487.10/15,613.74
  6. Step 6: Final answer
    x = 11,785.48

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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.