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Finding the Fourth Proportional to 14,395.47, 19,865.71 and 8,425.95

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Solution

The fourth proportional to 14,395.47, 19,865.71 and 8,425.95 is: 11,627.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,395.47 : 19,865.71 = 8,425.95 : x
  2. Step 2: Convert to fraction form
    14,395.47/19,865.71 = 8,425.95/x
  3. Step 3: Cross multiply
    14,395.47x = 19,865.71 × 8,425.95
  4. Step 4: Simplify right side
    14,395.47x = 167,387,423.69
  5. Step 5: Solve for x
    x = 167,387,423.69/14,395.47
  6. Step 6: Final answer
    x = 11,627.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.