Home / 31,981.22-47,971.95-9,794.51

Finding the Fourth Proportional to 31,981.22, 47,971.95 and 9,794.51

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Solution

The fourth proportional to 31,981.22, 47,971.95 and 9,794.51 is: 14,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.22 : 47,971.95 = 9,794.51 : x
  2. Step 2: Convert to fraction form
    31,981.22/47,971.95 = 9,794.51/x
  3. Step 3: Cross multiply
    31,981.22x = 47,971.95 × 9,794.51
  4. Step 4: Simplify right side
    31,981.22x = 469,861,743.99
  5. Step 5: Solve for x
    x = 469,861,743.99/31,981.22
  6. Step 6: Final answer
    x = 14,691.80

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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.