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Finding the Fourth Proportional to 18,901.66, 28,354.08 and 5,754.14

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Solution

The fourth proportional to 18,901.66, 28,354.08 and 5,754.14 is: 8,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.66 : 28,354.08 = 5,754.14 : x
  2. Step 2: Convert to fraction form
    18,901.66/28,354.08 = 5,754.14/x
  3. Step 3: Cross multiply
    18,901.66x = 28,354.08 × 5,754.14
  4. Step 4: Simplify right side
    18,901.66x = 163,153,345.89
  5. Step 5: Solve for x
    x = 163,153,345.89/18,901.66
  6. Step 6: Final answer
    x = 8,631.69

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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.