Home / 12,488.47-18,727.23-4,691.81

Finding the Fourth Proportional to 12,488.47, 18,727.23 and 4,691.81

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Solution

The fourth proportional to 12,488.47, 18,727.23 and 4,691.81 is: 7,035.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.47 : 18,727.23 = 4,691.81 : x
  2. Step 2: Convert to fraction form
    12,488.47/18,727.23 = 4,691.81/x
  3. Step 3: Cross multiply
    12,488.47x = 18,727.23 × 4,691.81
  4. Step 4: Simplify right side
    12,488.47x = 87,864,669.40
  5. Step 5: Solve for x
    x = 87,864,669.40/12,488.47
  6. Step 6: Final answer
    x = 7,035.66

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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.