Home / 28,175.12-42,260.16-8,458.08

Finding the Fourth Proportional to 28,175.12, 42,260.16 and 8,458.08

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Solution

The fourth proportional to 28,175.12, 42,260.16 and 8,458.08 is: 12,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.12 : 42,260.16 = 8,458.08 : x
  2. Step 2: Convert to fraction form
    28,175.12/42,260.16 = 8,458.08/x
  3. Step 3: Cross multiply
    28,175.12x = 42,260.16 × 8,458.08
  4. Step 4: Simplify right side
    28,175.12x = 357,439,814.09
  5. Step 5: Solve for x
    x = 357,439,814.09/28,175.12
  6. Step 6: Final answer
    x = 12,686.36

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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.