Home / 28,637.98-39,517.22-15,890.74

Finding the Fourth Proportional to 28,637.98, 39,517.22 and 15,890.74

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Solution

The fourth proportional to 28,637.98, 39,517.22 and 15,890.74 is: 21,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.98 : 39,517.22 = 15,890.74 : x
  2. Step 2: Convert to fraction form
    28,637.98/39,517.22 = 15,890.74/x
  3. Step 3: Cross multiply
    28,637.98x = 39,517.22 × 15,890.74
  4. Step 4: Simplify right side
    28,637.98x = 627,957,809.48
  5. Step 5: Solve for x
    x = 627,957,809.48/28,637.98
  6. Step 6: Final answer
    x = 21,927.45

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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.