Home / 21,407.40-32,107.68-5,612.76

Finding the Fourth Proportional to 21,407.40, 32,107.68 and 5,612.76

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Solution

The fourth proportional to 21,407.40, 32,107.68 and 5,612.76 is: 8,418.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.40 : 32,107.68 = 5,612.76 : x
  2. Step 2: Convert to fraction form
    21,407.40/32,107.68 = 5,612.76/x
  3. Step 3: Cross multiply
    21,407.40x = 32,107.68 × 5,612.76
  4. Step 4: Simplify right side
    21,407.40x = 180,212,702.00
  5. Step 5: Solve for x
    x = 180,212,702.00/21,407.40
  6. Step 6: Final answer
    x = 8,418.24

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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.