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Finding the Fourth Proportional to 10,869.84, 15,000.39 and 5,901.84

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Solution

The fourth proportional to 10,869.84, 15,000.39 and 5,901.84 is: 8,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.84 : 15,000.39 = 5,901.84 : x
  2. Step 2: Convert to fraction form
    10,869.84/15,000.39 = 5,901.84/x
  3. Step 3: Cross multiply
    10,869.84x = 15,000.39 × 5,901.84
  4. Step 4: Simplify right side
    10,869.84x = 88,529,901.72
  5. Step 5: Solve for x
    x = 88,529,901.72/10,869.84
  6. Step 6: Final answer
    x = 8,144.55

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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.