Home / 13,857.12-19,123.28-7,569.48

Finding the Fourth Proportional to 13,857.12, 19,123.28 and 7,569.48

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Solution

The fourth proportional to 13,857.12, 19,123.28 and 7,569.48 is: 10,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.12 : 19,123.28 = 7,569.48 : x
  2. Step 2: Convert to fraction form
    13,857.12/19,123.28 = 7,569.48/x
  3. Step 3: Cross multiply
    13,857.12x = 19,123.28 × 7,569.48
  4. Step 4: Simplify right side
    13,857.12x = 144,753,285.49
  5. Step 5: Solve for x
    x = 144,753,285.49/13,857.12
  6. Step 6: Final answer
    x = 10,446.13

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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.