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Finding the Fourth Proportional to 18,708.30, 28,024.65 and 11,666.70

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Solution

The fourth proportional to 18,708.30, 28,024.65 and 11,666.70 is: 17,476.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.30 : 28,024.65 = 11,666.70 : x
  2. Step 2: Convert to fraction form
    18,708.30/28,024.65 = 11,666.70/x
  3. Step 3: Cross multiply
    18,708.30x = 28,024.65 × 11,666.70
  4. Step 4: Simplify right side
    18,708.30x = 326,955,184.16
  5. Step 5: Solve for x
    x = 326,955,184.16/18,708.30
  6. Step 6: Final answer
    x = 17,476.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.