Home / 31,865.03-47,731.91-18,685.62

Finding the Fourth Proportional to 31,865.03, 47,731.91 and 18,685.62

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Solution

The fourth proportional to 31,865.03, 47,731.91 and 18,685.62 is: 27,989.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.03 : 47,731.91 = 18,685.62 : x
  2. Step 2: Convert to fraction form
    31,865.03/47,731.91 = 18,685.62/x
  3. Step 3: Cross multiply
    31,865.03x = 47,731.91 × 18,685.62
  4. Step 4: Simplify right side
    31,865.03x = 891,900,238.71
  5. Step 5: Solve for x
    x = 891,900,238.71/31,865.03
  6. Step 6: Final answer
    x = 27,989.94

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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.