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Finding the Fourth Proportional to 14,678.91, 20,259.48 and 8,713.89

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Solution

The fourth proportional to 14,678.91, 20,259.48 and 8,713.89 is: 12,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.91 : 20,259.48 = 8,713.89 : x
  2. Step 2: Convert to fraction form
    14,678.91/20,259.48 = 8,713.89/x
  3. Step 3: Cross multiply
    14,678.91x = 20,259.48 × 8,713.89
  4. Step 4: Simplify right side
    14,678.91x = 176,538,880.18
  5. Step 5: Solve for x
    x = 176,538,880.18/14,678.91
  6. Step 6: Final answer
    x = 12,026.70

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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.