Home / 42,691.03-64,038.40-13,110.04

Finding the Fourth Proportional to 42,691.03, 64,038.40 and 13,110.04

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Solution

The fourth proportional to 42,691.03, 64,038.40 and 13,110.04 is: 19,665.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,691.03 : 64,038.40 = 13,110.04 : x
  2. Step 2: Convert to fraction form
    42,691.03/64,038.40 = 13,110.04/x
  3. Step 3: Cross multiply
    42,691.03x = 64,038.40 × 13,110.04
  4. Step 4: Simplify right side
    42,691.03x = 839,545,672.59
  5. Step 5: Solve for x
    x = 839,545,672.59/42,691.03
  6. Step 6: Final answer
    x = 19,665.62

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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.