Home / 10,180.95-15,271.38-2,785.20

Finding the Fourth Proportional to 10,180.95, 15,271.38 and 2,785.20

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Solution

The fourth proportional to 10,180.95, 15,271.38 and 2,785.20 is: 4,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,180.95 : 15,271.38 = 2,785.20 : x
  2. Step 2: Convert to fraction form
    10,180.95/15,271.38 = 2,785.20/x
  3. Step 3: Cross multiply
    10,180.95x = 15,271.38 × 2,785.20
  4. Step 4: Simplify right side
    10,180.95x = 42,533,847.58
  5. Step 5: Solve for x
    x = 42,533,847.58/10,180.95
  6. Step 6: Final answer
    x = 4,177.79

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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.