Home / 13,857.28-19,122.92-7,569.68

Finding the Fourth Proportional to 13,857.28, 19,122.92 and 7,569.68

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Solution

The fourth proportional to 13,857.28, 19,122.92 and 7,569.68 is: 10,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.28 : 19,122.92 = 7,569.68 : x
  2. Step 2: Convert to fraction form
    13,857.28/19,122.92 = 7,569.68/x
  3. Step 3: Cross multiply
    13,857.28x = 19,122.92 × 7,569.68
  4. Step 4: Simplify right side
    13,857.28x = 144,754,385.07
  5. Step 5: Solve for x
    x = 144,754,385.07/13,857.28
  6. Step 6: Final answer
    x = 10,446.09

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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.