Home / 28,280.46-42,356.06-13,499.76

Finding the Fourth Proportional to 28,280.46, 42,356.06 and 13,499.76

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Solution

The fourth proportional to 28,280.46, 42,356.06 and 13,499.76 is: 20,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.46 : 42,356.06 = 13,499.76 : x
  2. Step 2: Convert to fraction form
    28,280.46/42,356.06 = 13,499.76/x
  3. Step 3: Cross multiply
    28,280.46x = 42,356.06 × 13,499.76
  4. Step 4: Simplify right side
    28,280.46x = 571,796,644.55
  5. Step 5: Solve for x
    x = 571,796,644.55/28,280.46
  6. Step 6: Final answer
    x = 20,218.79

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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.