Home / 28,539.74-39,386-15,792.70

Finding the Fourth Proportional to 28,539.74, 39,386 and 15,792.70

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Solution

The fourth proportional to 28,539.74, 39,386 and 15,792.70 is: 21,794.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.74 : 39,386 = 15,792.70 : x
  2. Step 2: Convert to fraction form
    28,539.74/39,386 = 15,792.70/x
  3. Step 3: Cross multiply
    28,539.74x = 39,386 × 15,792.70
  4. Step 4: Simplify right side
    28,539.74x = 622,011,282.20
  5. Step 5: Solve for x
    x = 622,011,282.20/28,539.74
  6. Step 6: Final answer
    x = 21,794.57

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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.