Home / 31,416.17-47,127.69-13,634.61

Finding the Fourth Proportional to 31,416.17, 47,127.69 and 13,634.61

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Solution

The fourth proportional to 31,416.17, 47,127.69 and 13,634.61 is: 20,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.17 : 47,127.69 = 13,634.61 : x
  2. Step 2: Convert to fraction form
    31,416.17/47,127.69 = 13,634.61/x
  3. Step 3: Cross multiply
    31,416.17x = 47,127.69 × 13,634.61
  4. Step 4: Simplify right side
    31,416.17x = 642,567,636.12
  5. Step 5: Solve for x
    x = 642,567,636.12/31,416.17
  6. Step 6: Final answer
    x = 20,453.40

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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.