Home / 13,397.05-18,486.30-7,731.73

Finding the Fourth Proportional to 13,397.05, 18,486.30 and 7,731.73

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Solution

The fourth proportional to 13,397.05, 18,486.30 and 7,731.73 is: 10,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.05 : 18,486.30 = 7,731.73 : x
  2. Step 2: Convert to fraction form
    13,397.05/18,486.30 = 7,731.73/x
  3. Step 3: Cross multiply
    13,397.05x = 18,486.30 × 7,731.73
  4. Step 4: Simplify right side
    13,397.05x = 142,931,058.66
  5. Step 5: Solve for x
    x = 142,931,058.66/13,397.05
  6. Step 6: Final answer
    x = 10,668.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.