Home / 21,622.20-32,407.70-9,142.20

Finding the Fourth Proportional to 21,622.20, 32,407.70 and 9,142.20

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Solution

The fourth proportional to 21,622.20, 32,407.70 and 9,142.20 is: 13,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.20 : 32,407.70 = 9,142.20 : x
  2. Step 2: Convert to fraction form
    21,622.20/32,407.70 = 9,142.20/x
  3. Step 3: Cross multiply
    21,622.20x = 32,407.70 × 9,142.20
  4. Step 4: Simplify right side
    21,622.20x = 296,277,674.94
  5. Step 5: Solve for x
    x = 296,277,674.94/21,622.20
  6. Step 6: Final answer
    x = 13,702.48

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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.