Home / 13,869.17-19,135.26-8,204.57

Finding the Fourth Proportional to 13,869.17, 19,135.26 and 8,204.57

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Solution

The fourth proportional to 13,869.17, 19,135.26 and 8,204.57 is: 11,319.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.17 : 19,135.26 = 8,204.57 : x
  2. Step 2: Convert to fraction form
    13,869.17/19,135.26 = 8,204.57/x
  3. Step 3: Cross multiply
    13,869.17x = 19,135.26 × 8,204.57
  4. Step 4: Simplify right side
    13,869.17x = 156,996,484.46
  5. Step 5: Solve for x
    x = 156,996,484.46/13,869.17
  6. Step 6: Final answer
    x = 11,319.82

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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.