Home / 18,531.32-25,571.45-10,977.66

Finding the Fourth Proportional to 18,531.32, 25,571.45 and 10,977.66

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Solution

The fourth proportional to 18,531.32, 25,571.45 and 10,977.66 is: 15,148.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.32 : 25,571.45 = 10,977.66 : x
  2. Step 2: Convert to fraction form
    18,531.32/25,571.45 = 10,977.66/x
  3. Step 3: Cross multiply
    18,531.32x = 25,571.45 × 10,977.66
  4. Step 4: Simplify right side
    18,531.32x = 280,714,711.25
  5. Step 5: Solve for x
    x = 280,714,711.25/18,531.32
  6. Step 6: Final answer
    x = 15,148.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.