Home / 25,421.28-35,083.68-15,354.72

Finding the Fourth Proportional to 25,421.28, 35,083.68 and 15,354.72

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Solution

The fourth proportional to 25,421.28, 35,083.68 and 15,354.72 is: 21,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.28 : 35,083.68 = 15,354.72 : x
  2. Step 2: Convert to fraction form
    25,421.28/35,083.68 = 15,354.72/x
  3. Step 3: Cross multiply
    25,421.28x = 35,083.68 × 15,354.72
  4. Step 4: Simplify right side
    25,421.28x = 538,700,082.97
  5. Step 5: Solve for x
    x = 538,700,082.97/25,421.28
  6. Step 6: Final answer
    x = 21,190.91

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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.