Home / 15,163.52-20,931.36-8,877.92

Finding the Fourth Proportional to 15,163.52, 20,931.36 and 8,877.92

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Solution

The fourth proportional to 15,163.52, 20,931.36 and 8,877.92 is: 12,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.52 : 20,931.36 = 8,877.92 : x
  2. Step 2: Convert to fraction form
    15,163.52/20,931.36 = 8,877.92/x
  3. Step 3: Cross multiply
    15,163.52x = 20,931.36 × 8,877.92
  4. Step 4: Simplify right side
    15,163.52x = 185,826,939.57
  5. Step 5: Solve for x
    x = 185,826,939.57/15,163.52
  6. Step 6: Final answer
    x = 12,254.87

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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.