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Finding the Fourth Proportional to 14,975.80, 20,654.94 and 9,671.92

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Solution

The fourth proportional to 14,975.80, 20,654.94 and 9,671.92 is: 13,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.80 : 20,654.94 = 9,671.92 : x
  2. Step 2: Convert to fraction form
    14,975.80/20,654.94 = 9,671.92/x
  3. Step 3: Cross multiply
    14,975.80x = 20,654.94 × 9,671.92
  4. Step 4: Simplify right side
    14,975.80x = 199,772,927.28
  5. Step 5: Solve for x
    x = 199,772,927.28/14,975.80
  6. Step 6: Final answer
    x = 13,339.72

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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.