Home / 28,371.85-39,154.11-15,626.38

Finding the Fourth Proportional to 28,371.85, 39,154.11 and 15,626.38

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Solution

The fourth proportional to 28,371.85, 39,154.11 and 15,626.38 is: 21,564.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.85 : 39,154.11 = 15,626.38 : x
  2. Step 2: Convert to fraction form
    28,371.85/39,154.11 = 15,626.38/x
  3. Step 3: Cross multiply
    28,371.85x = 39,154.11 × 15,626.38
  4. Step 4: Simplify right side
    28,371.85x = 611,837,001.42
  5. Step 5: Solve for x
    x = 611,837,001.42/28,371.85
  6. Step 6: Final answer
    x = 21,564.93

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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.