Home / 10,085.50-15,095.90-5,393.78

Finding the Fourth Proportional to 10,085.50, 15,095.90 and 5,393.78

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Solution

The fourth proportional to 10,085.50, 15,095.90 and 5,393.78 is: 8,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.50 : 15,095.90 = 5,393.78 : x
  2. Step 2: Convert to fraction form
    10,085.50/15,095.90 = 5,393.78/x
  3. Step 3: Cross multiply
    10,085.50x = 15,095.90 × 5,393.78
  4. Step 4: Simplify right side
    10,085.50x = 81,423,958.12
  5. Step 5: Solve for x
    x = 81,423,958.12/10,085.50
  6. Step 6: Final answer
    x = 8,073.37

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1.5x scale

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.