Home / 28,129.50-42,194.52-12,331.26

Finding the Fourth Proportional to 28,129.50, 42,194.52 and 12,331.26

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Solution

The fourth proportional to 28,129.50, 42,194.52 and 12,331.26 is: 18,497.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.50 : 42,194.52 = 12,331.26 : x
  2. Step 2: Convert to fraction form
    28,129.50/42,194.52 = 12,331.26/x
  3. Step 3: Cross multiply
    28,129.50x = 42,194.52 × 12,331.26
  4. Step 4: Simplify right side
    28,129.50x = 520,311,596.70
  5. Step 5: Solve for x
    x = 520,311,596.70/28,129.50
  6. Step 6: Final answer
    x = 18,497.01

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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.