Home / 10,348.07-15,529.86-7,581.78

Finding the Fourth Proportional to 10,348.07, 15,529.86 and 7,581.78

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Solution

The fourth proportional to 10,348.07, 15,529.86 and 7,581.78 is: 11,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,348.07 : 15,529.86 = 7,581.78 : x
  2. Step 2: Convert to fraction form
    10,348.07/15,529.86 = 7,581.78/x
  3. Step 3: Cross multiply
    10,348.07x = 15,529.86 × 7,581.78
  4. Step 4: Simplify right side
    10,348.07x = 117,743,981.95
  5. Step 5: Solve for x
    x = 117,743,981.95/10,348.07
  6. Step 6: Final answer
    x = 11,378.36

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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.