Home / 28,126.92-42,029.24-21,426.24

Finding the Fourth Proportional to 28,126.92, 42,029.24 and 21,426.24

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Solution

The fourth proportional to 28,126.92, 42,029.24 and 21,426.24 is: 32,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.92 : 42,029.24 = 21,426.24 : x
  2. Step 2: Convert to fraction form
    28,126.92/42,029.24 = 21,426.24/x
  3. Step 3: Cross multiply
    28,126.92x = 42,029.24 × 21,426.24
  4. Step 4: Simplify right side
    28,126.92x = 900,528,583.26
  5. Step 5: Solve for x
    x = 900,528,583.26/28,126.92
  6. Step 6: Final answer
    x = 32,016.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.