Home / 21,670.52-32,479.20-12,318.38

Finding the Fourth Proportional to 21,670.52, 32,479.20 and 12,318.38

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Solution

The fourth proportional to 21,670.52, 32,479.20 and 12,318.38 is: 18,462.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.52 : 32,479.20 = 12,318.38 : x
  2. Step 2: Convert to fraction form
    21,670.52/32,479.20 = 12,318.38/x
  3. Step 3: Cross multiply
    21,670.52x = 32,479.20 × 12,318.38
  4. Step 4: Simplify right side
    21,670.52x = 400,091,127.70
  5. Step 5: Solve for x
    x = 400,091,127.70/21,670.52
  6. Step 6: Final answer
    x = 18,462.46

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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.