Home / 28,278.64-42,436.14-15,134.68

Finding the Fourth Proportional to 28,278.64, 42,436.14 and 15,134.68

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Solution

The fourth proportional to 28,278.64, 42,436.14 and 15,134.68 is: 22,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.64 : 42,436.14 = 15,134.68 : x
  2. Step 2: Convert to fraction form
    28,278.64/42,436.14 = 15,134.68/x
  3. Step 3: Cross multiply
    28,278.64x = 42,436.14 × 15,134.68
  4. Step 4: Simplify right side
    28,278.64x = 642,257,399.34
  5. Step 5: Solve for x
    x = 642,257,399.34/28,278.64
  6. Step 6: Final answer
    x = 22,711.75

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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.