Home / 31,812.20-47,706.15-9,618.20

Finding the Fourth Proportional to 31,812.20, 47,706.15 and 9,618.20

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Solution

The fourth proportional to 31,812.20, 47,706.15 and 9,618.20 is: 14,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,812.20 : 47,706.15 = 9,618.20 : x
  2. Step 2: Convert to fraction form
    31,812.20/47,706.15 = 9,618.20/x
  3. Step 3: Cross multiply
    31,812.20x = 47,706.15 × 9,618.20
  4. Step 4: Simplify right side
    31,812.20x = 458,847,291.93
  5. Step 5: Solve for x
    x = 458,847,291.93/31,812.20
  6. Step 6: Final answer
    x = 14,423.63

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1.5x scale

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.