Home / 13,431.71-20,147.63-4,547.12

Finding the Fourth Proportional to 13,431.71, 20,147.63 and 4,547.12

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Solution

The fourth proportional to 13,431.71, 20,147.63 and 4,547.12 is: 6,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.71 : 20,147.63 = 4,547.12 : x
  2. Step 2: Convert to fraction form
    13,431.71/20,147.63 = 4,547.12/x
  3. Step 3: Cross multiply
    13,431.71x = 20,147.63 × 4,547.12
  4. Step 4: Simplify right side
    13,431.71x = 91,613,691.33
  5. Step 5: Solve for x
    x = 91,613,691.33/13,431.71
  6. Step 6: Final answer
    x = 6,820.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.