Home / 42,966.12-64,449.06-13,385.64

Finding the Fourth Proportional to 42,966.12, 64,449.06 and 13,385.64

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Solution

The fourth proportional to 42,966.12, 64,449.06 and 13,385.64 is: 20,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,966.12 : 64,449.06 = 13,385.64 : x
  2. Step 2: Convert to fraction form
    42,966.12/64,449.06 = 13,385.64/x
  3. Step 3: Cross multiply
    42,966.12x = 64,449.06 × 13,385.64
  4. Step 4: Simplify right side
    42,966.12x = 862,691,915.50
  5. Step 5: Solve for x
    x = 862,691,915.50/42,966.12
  6. Step 6: Final answer
    x = 20,078.42

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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.