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Finding the Fourth Proportional to 14,888.40, 20,549.68 and 8,604.40

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Solution

The fourth proportional to 14,888.40, 20,549.68 and 8,604.40 is: 11,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.40 : 20,549.68 = 8,604.40 : x
  2. Step 2: Convert to fraction form
    14,888.40/20,549.68 = 8,604.40/x
  3. Step 3: Cross multiply
    14,888.40x = 20,549.68 × 8,604.40
  4. Step 4: Simplify right side
    14,888.40x = 176,817,666.59
  5. Step 5: Solve for x
    x = 176,817,666.59/14,888.40
  6. Step 6: Final answer
    x = 11,876.20

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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.