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Finding the Fourth Proportional to 14,690.79, 20,275.79 and 8,725.68

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Solution

The fourth proportional to 14,690.79, 20,275.79 and 8,725.68 is: 12,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,690.79 : 20,275.79 = 8,725.68 : x
  2. Step 2: Convert to fraction form
    14,690.79/20,275.79 = 8,725.68/x
  3. Step 3: Cross multiply
    14,690.79x = 20,275.79 × 8,725.68
  4. Step 4: Simplify right side
    14,690.79x = 176,920,055.29
  5. Step 5: Solve for x
    x = 176,920,055.29/14,690.79
  6. Step 6: Final answer
    x = 12,042.92

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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.