Home / 10,139.68-15,199.80-8,054.20

Finding the Fourth Proportional to 10,139.68, 15,199.80 and 8,054.20

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Solution

The fourth proportional to 10,139.68, 15,199.80 and 8,054.20 is: 12,073.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.68 : 15,199.80 = 8,054.20 : x
  2. Step 2: Convert to fraction form
    10,139.68/15,199.80 = 8,054.20/x
  3. Step 3: Cross multiply
    10,139.68x = 15,199.80 × 8,054.20
  4. Step 4: Simplify right side
    10,139.68x = 122,422,229.16
  5. Step 5: Solve for x
    x = 122,422,229.16/10,139.68
  6. Step 6: Final answer
    x = 12,073.58

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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.