Home / 21,902.60-30,228.72-12,472.04

Finding the Fourth Proportional to 21,902.60, 30,228.72 and 12,472.04

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Solution

The fourth proportional to 21,902.60, 30,228.72 and 12,472.04 is: 17,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.60 : 30,228.72 = 12,472.04 : x
  2. Step 2: Convert to fraction form
    21,902.60/30,228.72 = 12,472.04/x
  3. Step 3: Cross multiply
    21,902.60x = 30,228.72 × 12,472.04
  4. Step 4: Simplify right side
    21,902.60x = 377,013,804.99
  5. Step 5: Solve for x
    x = 377,013,804.99/21,902.60
  6. Step 6: Final answer
    x = 17,213.20

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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.