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Finding the Fourth Proportional to 25,984, 38,939.28 and 12,818.08

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Solution

The fourth proportional to 25,984, 38,939.28 and 12,818.08 is: 19,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,984 : 38,939.28 = 12,818.08 : x
  2. Step 2: Convert to fraction form
    25,984/38,939.28 = 12,818.08/x
  3. Step 3: Cross multiply
    25,984x = 38,939.28 × 12,818.08
  4. Step 4: Simplify right side
    25,984x = 499,126,806.18
  5. Step 5: Solve for x
    x = 499,126,806.18/25,984
  6. Step 6: Final answer
    x = 19,209.01

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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.