Home / 42,840.28-64,248.09-14,759.20

Finding the Fourth Proportional to 42,840.28, 64,248.09 and 14,759.20

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Solution

The fourth proportional to 42,840.28, 64,248.09 and 14,759.20 is: 22,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,840.28 : 64,248.09 = 14,759.20 : x
  2. Step 2: Convert to fraction form
    42,840.28/64,248.09 = 14,759.20/x
  3. Step 3: Cross multiply
    42,840.28x = 64,248.09 × 14,759.20
  4. Step 4: Simplify right side
    42,840.28x = 948,250,409.93
  5. Step 5: Solve for x
    x = 948,250,409.93/42,840.28
  6. Step 6: Final answer
    x = 22,134.55

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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.