Home / 10,128.66-15,190.11-3,888.24

Finding the Fourth Proportional to 10,128.66, 15,190.11 and 3,888.24

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Solution

The fourth proportional to 10,128.66, 15,190.11 and 3,888.24 is: 5,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.66 : 15,190.11 = 3,888.24 : x
  2. Step 2: Convert to fraction form
    10,128.66/15,190.11 = 3,888.24/x
  3. Step 3: Cross multiply
    10,128.66x = 15,190.11 × 3,888.24
  4. Step 4: Simplify right side
    10,128.66x = 59,062,793.31
  5. Step 5: Solve for x
    x = 59,062,793.31/10,128.66
  6. Step 6: Final answer
    x = 5,831.25

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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.