Home / 31,812.63-47,686.14-14,287.47

Finding the Fourth Proportional to 31,812.63, 47,686.14 and 14,287.47

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Solution

The fourth proportional to 31,812.63, 47,686.14 and 14,287.47 is: 21,416.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,812.63 : 47,686.14 = 14,287.47 : x
  2. Step 2: Convert to fraction form
    31,812.63/47,686.14 = 14,287.47/x
  3. Step 3: Cross multiply
    31,812.63x = 47,686.14 × 14,287.47
  4. Step 4: Simplify right side
    31,812.63x = 681,314,294.67
  5. Step 5: Solve for x
    x = 681,314,294.67/31,812.63
  6. Step 6: Final answer
    x = 21,416.47

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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.