Home / 12,521.64-18,772.50-6,278.28

Finding the Fourth Proportional to 12,521.64, 18,772.50 and 6,278.28

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Solution

The fourth proportional to 12,521.64, 18,772.50 and 6,278.28 is: 9,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.64 : 18,772.50 = 6,278.28 : x
  2. Step 2: Convert to fraction form
    12,521.64/18,772.50 = 6,278.28/x
  3. Step 3: Cross multiply
    12,521.64x = 18,772.50 × 6,278.28
  4. Step 4: Simplify right side
    12,521.64x = 117,859,011.30
  5. Step 5: Solve for x
    x = 117,859,011.30/12,521.64
  6. Step 6: Final answer
    x = 9,412.43

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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.