Home / 28,207.12-42,311.20-10,685.20

Finding the Fourth Proportional to 28,207.12, 42,311.20 and 10,685.20

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Solution

The fourth proportional to 28,207.12, 42,311.20 and 10,685.20 is: 16,028.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.12 : 42,311.20 = 10,685.20 : x
  2. Step 2: Convert to fraction form
    28,207.12/42,311.20 = 10,685.20/x
  3. Step 3: Cross multiply
    28,207.12x = 42,311.20 × 10,685.20
  4. Step 4: Simplify right side
    28,207.12x = 452,103,634.24
  5. Step 5: Solve for x
    x = 452,103,634.24/28,207.12
  6. Step 6: Final answer
    x = 16,028.00

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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.