Home / 28,366.92-39,200.30-21,281.04

Finding the Fourth Proportional to 28,366.92, 39,200.30 and 21,281.04

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Solution

The fourth proportional to 28,366.92, 39,200.30 and 21,281.04 is: 29,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.92 : 39,200.30 = 21,281.04 : x
  2. Step 2: Convert to fraction form
    28,366.92/39,200.30 = 21,281.04/x
  3. Step 3: Cross multiply
    28,366.92x = 39,200.30 × 21,281.04
  4. Step 4: Simplify right side
    28,366.92x = 834,223,152.31
  5. Step 5: Solve for x
    x = 834,223,152.31/28,366.92
  6. Step 6: Final answer
    x = 29,408.31

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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.