Home / 42,691.04-64,034.88-13,107.36

Finding the Fourth Proportional to 42,691.04, 64,034.88 and 13,107.36

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Solution

The fourth proportional to 42,691.04, 64,034.88 and 13,107.36 is: 19,660.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,691.04 : 64,034.88 = 13,107.36 : x
  2. Step 2: Convert to fraction form
    42,691.04/64,034.88 = 13,107.36/x
  3. Step 3: Cross multiply
    42,691.04x = 64,034.88 × 13,107.36
  4. Step 4: Simplify right side
    42,691.04x = 839,328,224.72
  5. Step 5: Solve for x
    x = 839,328,224.72/42,691.04
  6. Step 6: Final answer
    x = 19,660.52

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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.