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Finding the Fourth Proportional to 18,398.68, 27,574.88 and 9,964.86

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Solution

The fourth proportional to 18,398.68, 27,574.88 and 9,964.86 is: 14,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.68 : 27,574.88 = 9,964.86 : x
  2. Step 2: Convert to fraction form
    18,398.68/27,574.88 = 9,964.86/x
  3. Step 3: Cross multiply
    18,398.68x = 27,574.88 × 9,964.86
  4. Step 4: Simplify right side
    18,398.68x = 274,779,680.84
  5. Step 5: Solve for x
    x = 274,779,680.84/18,398.68
  6. Step 6: Final answer
    x = 14,934.75

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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.