Home / 21,680.20-32,520.14-6,890.28

Finding the Fourth Proportional to 21,680.20, 32,520.14 and 6,890.28

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Solution

The fourth proportional to 21,680.20, 32,520.14 and 6,890.28 is: 10,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.20 : 32,520.14 = 6,890.28 : x
  2. Step 2: Convert to fraction form
    21,680.20/32,520.14 = 6,890.28/x
  3. Step 3: Cross multiply
    21,680.20x = 32,520.14 × 6,890.28
  4. Step 4: Simplify right side
    21,680.20x = 224,072,870.24
  5. Step 5: Solve for x
    x = 224,072,870.24/21,680.20
  6. Step 6: Final answer
    x = 10,335.37

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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.