Home / 10,257.89-15,381.36-5,322.56

Finding the Fourth Proportional to 10,257.89, 15,381.36 and 5,322.56

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Solution

The fourth proportional to 10,257.89, 15,381.36 and 5,322.56 is: 7,981.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.89 : 15,381.36 = 5,322.56 : x
  2. Step 2: Convert to fraction form
    10,257.89/15,381.36 = 5,322.56/x
  3. Step 3: Cross multiply
    10,257.89x = 15,381.36 × 5,322.56
  4. Step 4: Simplify right side
    10,257.89x = 81,868,134.57
  5. Step 5: Solve for x
    x = 81,868,134.57/10,257.89
  6. Step 6: Final answer
    x = 7,981.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.