Home / 28,437.84-42,591.60-13,657.20

Finding the Fourth Proportional to 28,437.84, 42,591.60 and 13,657.20

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Solution

The fourth proportional to 28,437.84, 42,591.60 and 13,657.20 is: 20,454.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.84 : 42,591.60 = 13,657.20 : x
  2. Step 2: Convert to fraction form
    28,437.84/42,591.60 = 13,657.20/x
  3. Step 3: Cross multiply
    28,437.84x = 42,591.60 × 13,657.20
  4. Step 4: Simplify right side
    28,437.84x = 581,681,999.52
  5. Step 5: Solve for x
    x = 581,681,999.52/28,437.84
  6. Step 6: Final answer
    x = 20,454.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.