Home / 10,869.63-15,000.09-6,155.43

Finding the Fourth Proportional to 10,869.63, 15,000.09 and 6,155.43

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Solution

The fourth proportional to 10,869.63, 15,000.09 and 6,155.43 is: 8,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.63 : 15,000.09 = 6,155.43 : x
  2. Step 2: Convert to fraction form
    10,869.63/15,000.09 = 6,155.43/x
  3. Step 3: Cross multiply
    10,869.63x = 15,000.09 × 6,155.43
  4. Step 4: Simplify right side
    10,869.63x = 92,332,003.99
  5. Step 5: Solve for x
    x = 92,332,003.99/10,869.63
  6. Step 6: Final answer
    x = 8,494.49

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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.