Home / 10,186.40-15,280.28-2,790.24

Finding the Fourth Proportional to 10,186.40, 15,280.28 and 2,790.24

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Solution

The fourth proportional to 10,186.40, 15,280.28 and 2,790.24 is: 4,185.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.40 : 15,280.28 = 2,790.24 : x
  2. Step 2: Convert to fraction form
    10,186.40/15,280.28 = 2,790.24/x
  3. Step 3: Cross multiply
    10,186.40x = 15,280.28 × 2,790.24
  4. Step 4: Simplify right side
    10,186.40x = 42,635,655.44
  5. Step 5: Solve for x
    x = 42,635,655.44/10,186.40
  6. Step 6: Final answer
    x = 4,185.55

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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.