Home / 12,281.12-18,423.96-6,731.40

Finding the Fourth Proportional to 12,281.12, 18,423.96 and 6,731.40

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Solution

The fourth proportional to 12,281.12, 18,423.96 and 6,731.40 is: 10,098.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.12 : 18,423.96 = 6,731.40 : x
  2. Step 2: Convert to fraction form
    12,281.12/18,423.96 = 6,731.40/x
  3. Step 3: Cross multiply
    12,281.12x = 18,423.96 × 6,731.40
  4. Step 4: Simplify right side
    12,281.12x = 124,019,044.34
  5. Step 5: Solve for x
    x = 124,019,044.34/12,281.12
  6. Step 6: Final answer
    x = 10,098.35

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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.