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Finding the Fourth Proportional to 14,425.43, 19,894.64 and 9,387.84

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Solution

The fourth proportional to 14,425.43, 19,894.64 and 9,387.84 is: 12,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,425.43 : 19,894.64 = 9,387.84 : x
  2. Step 2: Convert to fraction form
    14,425.43/19,894.64 = 9,387.84/x
  3. Step 3: Cross multiply
    14,425.43x = 19,894.64 × 9,387.84
  4. Step 4: Simplify right side
    14,425.43x = 186,767,650.24
  5. Step 5: Solve for x
    x = 186,767,650.24/14,425.43
  6. Step 6: Final answer
    x = 12,947.11

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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.