Home / 42,965.13-64,447.70-13,385.35

Finding the Fourth Proportional to 42,965.13, 64,447.70 and 13,385.35

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Solution

The fourth proportional to 42,965.13, 64,447.70 and 13,385.35 is: 20,078.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,965.13 : 64,447.70 = 13,385.35 : x
  2. Step 2: Convert to fraction form
    42,965.13/64,447.70 = 13,385.35/x
  3. Step 3: Cross multiply
    42,965.13x = 64,447.70 × 13,385.35
  4. Step 4: Simplify right side
    42,965.13x = 862,655,110.12
  5. Step 5: Solve for x
    x = 862,655,110.12/42,965.13
  6. Step 6: Final answer
    x = 20,078.03

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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.