Home / 10,660.55-15,990.90-4,085.16

Finding the Fourth Proportional to 10,660.55, 15,990.90 and 4,085.16

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Solution

The fourth proportional to 10,660.55, 15,990.90 and 4,085.16 is: 6,127.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.55 : 15,990.90 = 4,085.16 : x
  2. Step 2: Convert to fraction form
    10,660.55/15,990.90 = 4,085.16/x
  3. Step 3: Cross multiply
    10,660.55x = 15,990.90 × 4,085.16
  4. Step 4: Simplify right side
    10,660.55x = 65,325,385.04
  5. Step 5: Solve for x
    x = 65,325,385.04/10,660.55
  6. Step 6: Final answer
    x = 6,127.77

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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.