Home / 28,127.91-42,186.39-8,412.11

Finding the Fourth Proportional to 28,127.91, 42,186.39 and 8,412.11

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Solution

The fourth proportional to 28,127.91, 42,186.39 and 8,412.11 is: 12,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.91 : 42,186.39 = 8,412.11 : x
  2. Step 2: Convert to fraction form
    28,127.91/42,186.39 = 8,412.11/x
  3. Step 3: Cross multiply
    28,127.91x = 42,186.39 × 8,412.11
  4. Step 4: Simplify right side
    28,127.91x = 354,876,342.25
  5. Step 5: Solve for x
    x = 354,876,342.25/28,127.91
  6. Step 6: Final answer
    x = 12,616.52

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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.