Home / 28,278.46-42,353.07-13,497.75

Finding the Fourth Proportional to 28,278.46, 42,353.07 and 13,497.75

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Solution

The fourth proportional to 28,278.46, 42,353.07 and 13,497.75 is: 20,215.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.46 : 42,353.07 = 13,497.75 : x
  2. Step 2: Convert to fraction form
    28,278.46/42,353.07 = 13,497.75/x
  3. Step 3: Cross multiply
    28,278.46x = 42,353.07 × 13,497.75
  4. Step 4: Simplify right side
    28,278.46x = 571,671,150.59
  5. Step 5: Solve for x
    x = 571,671,150.59/28,278.46
  6. Step 6: Final answer
    x = 20,215.78

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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.