Home / 10,869.92-15,000.36-6,155.12

Finding the Fourth Proportional to 10,869.92, 15,000.36 and 6,155.12

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Solution

The fourth proportional to 10,869.92, 15,000.36 and 6,155.12 is: 8,493.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.92 : 15,000.36 = 6,155.12 : x
  2. Step 2: Convert to fraction form
    10,869.92/15,000.36 = 6,155.12/x
  3. Step 3: Cross multiply
    10,869.92x = 15,000.36 × 6,155.12
  4. Step 4: Simplify right side
    10,869.92x = 92,329,015.84
  5. Step 5: Solve for x
    x = 92,329,015.84/10,869.92
  6. Step 6: Final answer
    x = 8,493.99

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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.