Home / 28,007.20-38,702.75-22,085.90

Finding the Fourth Proportional to 28,007.20, 38,702.75 and 22,085.90

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Solution

The fourth proportional to 28,007.20, 38,702.75 and 22,085.90 is: 30,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.20 : 38,702.75 = 22,085.90 : x
  2. Step 2: Convert to fraction form
    28,007.20/38,702.75 = 22,085.90/x
  3. Step 3: Cross multiply
    28,007.20x = 38,702.75 × 22,085.90
  4. Step 4: Simplify right side
    28,007.20x = 854,785,066.23
  5. Step 5: Solve for x
    x = 854,785,066.23/28,007.20
  6. Step 6: Final answer
    x = 30,520.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.