Home / 21,438.14-32,158.42-6,649.16

Finding the Fourth Proportional to 21,438.14, 32,158.42 and 6,649.16

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Solution

The fourth proportional to 21,438.14, 32,158.42 and 6,649.16 is: 9,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.14 : 32,158.42 = 6,649.16 : x
  2. Step 2: Convert to fraction form
    21,438.14/32,158.42 = 6,649.16/x
  3. Step 3: Cross multiply
    21,438.14x = 32,158.42 × 6,649.16
  4. Step 4: Simplify right side
    21,438.14x = 213,826,319.14
  5. Step 5: Solve for x
    x = 213,826,319.14/21,438.14
  6. Step 6: Final answer
    x = 9,974.11

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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.