Home / 28,081.43-42,121.34-11,437.35

Finding the Fourth Proportional to 28,081.43, 42,121.34 and 11,437.35

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Solution

The fourth proportional to 28,081.43, 42,121.34 and 11,437.35 is: 17,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.43 : 42,121.34 = 11,437.35 : x
  2. Step 2: Convert to fraction form
    28,081.43/42,121.34 = 11,437.35/x
  3. Step 3: Cross multiply
    28,081.43x = 42,121.34 × 11,437.35
  4. Step 4: Simplify right side
    28,081.43x = 481,756,604.90
  5. Step 5: Solve for x
    x = 481,756,604.90/28,081.43
  6. Step 6: Final answer
    x = 17,155.70

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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.