Home / 31,491.04-47,239.28-8,117.28

Finding the Fourth Proportional to 31,491.04, 47,239.28 and 8,117.28

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Solution

The fourth proportional to 31,491.04, 47,239.28 and 8,117.28 is: 12,176.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,491.04 : 47,239.28 = 8,117.28 : x
  2. Step 2: Convert to fraction form
    31,491.04/47,239.28 = 8,117.28/x
  3. Step 3: Cross multiply
    31,491.04x = 47,239.28 × 8,117.28
  4. Step 4: Simplify right side
    31,491.04x = 383,454,462.76
  5. Step 5: Solve for x
    x = 383,454,462.76/31,491.04
  6. Step 6: Final answer
    x = 12,176.62

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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.