Home / 10,092.92-15,120.55-7,312.80

Finding the Fourth Proportional to 10,092.92, 15,120.55 and 7,312.80

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Solution

The fourth proportional to 10,092.92, 15,120.55 and 7,312.80 is: 10,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,092.92 : 15,120.55 = 7,312.80 : x
  2. Step 2: Convert to fraction form
    10,092.92/15,120.55 = 7,312.80/x
  3. Step 3: Cross multiply
    10,092.92x = 15,120.55 × 7,312.80
  4. Step 4: Simplify right side
    10,092.92x = 110,573,521.48
  5. Step 5: Solve for x
    x = 110,573,521.48/10,092.92
  6. Step 6: Final answer
    x = 10,955.55

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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.