Home / 39,254.78-54,171.14-21,349.40

Finding the Fourth Proportional to 39,254.78, 54,171.14 and 21,349.40

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Solution

The fourth proportional to 39,254.78, 54,171.14 and 21,349.40 is: 29,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,254.78 : 54,171.14 = 21,349.40 : x
  2. Step 2: Convert to fraction form
    39,254.78/54,171.14 = 21,349.40/x
  3. Step 3: Cross multiply
    39,254.78x = 54,171.14 × 21,349.40
  4. Step 4: Simplify right side
    39,254.78x = 1,156,520,958.71
  5. Step 5: Solve for x
    x = 1,156,520,958.71/39,254.78
  6. Step 6: Final answer
    x = 29,461.92

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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.