Home / 42,680.82-64,013.49-11,508.78

Finding the Fourth Proportional to 42,680.82, 64,013.49 and 11,508.78

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Solution

The fourth proportional to 42,680.82, 64,013.49 and 11,508.78 is: 17,261.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,680.82 : 64,013.49 = 11,508.78 : x
  2. Step 2: Convert to fraction form
    42,680.82/64,013.49 = 11,508.78/x
  3. Step 3: Cross multiply
    42,680.82x = 64,013.49 × 11,508.78
  4. Step 4: Simplify right side
    42,680.82x = 736,717,173.44
  5. Step 5: Solve for x
    x = 736,717,173.44/42,680.82
  6. Step 6: Final answer
    x = 17,261.08

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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.