Home / 22,239.40-30,682.92-12,807.76

Finding the Fourth Proportional to 22,239.40, 30,682.92 and 12,807.76

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Solution

The fourth proportional to 22,239.40, 30,682.92 and 12,807.76 is: 17,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.40 : 30,682.92 = 12,807.76 : x
  2. Step 2: Convert to fraction form
    22,239.40/30,682.92 = 12,807.76/x
  3. Step 3: Cross multiply
    22,239.40x = 30,682.92 × 12,807.76
  4. Step 4: Simplify right side
    22,239.40x = 392,979,475.46
  5. Step 5: Solve for x
    x = 392,979,475.46/22,239.40
  6. Step 6: Final answer
    x = 17,670.42

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Double scale
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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.