Home / 13,869.86-19,142.55-8,836.29

Finding the Fourth Proportional to 13,869.86, 19,142.55 and 8,836.29

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Solution

The fourth proportional to 13,869.86, 19,142.55 and 8,836.29 is: 12,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.86 : 19,142.55 = 8,836.29 : x
  2. Step 2: Convert to fraction form
    13,869.86/19,142.55 = 8,836.29/x
  3. Step 3: Cross multiply
    13,869.86x = 19,142.55 × 8,836.29
  4. Step 4: Simplify right side
    13,869.86x = 169,149,123.14
  5. Step 5: Solve for x
    x = 169,149,123.14/13,869.86
  6. Step 6: Final answer
    x = 12,195.45

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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.