Home / 28,356.98-39,132.32-15,609.88

Finding the Fourth Proportional to 28,356.98, 39,132.32 and 15,609.88

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Solution

The fourth proportional to 28,356.98, 39,132.32 and 15,609.88 is: 21,541.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.98 : 39,132.32 = 15,609.88 : x
  2. Step 2: Convert to fraction form
    28,356.98/39,132.32 = 15,609.88/x
  3. Step 3: Cross multiply
    28,356.98x = 39,132.32 × 15,609.88
  4. Step 4: Simplify right side
    28,356.98x = 610,850,819.32
  5. Step 5: Solve for x
    x = 610,850,819.32/28,356.98
  6. Step 6: Final answer
    x = 21,541.46

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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.