Home / 12,982.11-19,402.04-9,479.52

Finding the Fourth Proportional to 12,982.11, 19,402.04 and 9,479.52

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Solution

The fourth proportional to 12,982.11, 19,402.04 and 9,479.52 is: 14,167.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.11 : 19,402.04 = 9,479.52 : x
  2. Step 2: Convert to fraction form
    12,982.11/19,402.04 = 9,479.52/x
  3. Step 3: Cross multiply
    12,982.11x = 19,402.04 × 9,479.52
  4. Step 4: Simplify right side
    12,982.11x = 183,921,978.82
  5. Step 5: Solve for x
    x = 183,921,978.82/12,982.11
  6. Step 6: Final answer
    x = 14,167.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.