Home / 21,438.15-32,160.34-6,648.26

Finding the Fourth Proportional to 21,438.15, 32,160.34 and 6,648.26

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Solution

The fourth proportional to 21,438.15, 32,160.34 and 6,648.26 is: 9,973.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.15 : 32,160.34 = 6,648.26 : x
  2. Step 2: Convert to fraction form
    21,438.15/32,160.34 = 6,648.26/x
  3. Step 3: Cross multiply
    21,438.15x = 32,160.34 × 6,648.26
  4. Step 4: Simplify right side
    21,438.15x = 213,810,330.42
  5. Step 5: Solve for x
    x = 213,810,330.42/21,438.15
  6. Step 6: Final answer
    x = 9,973.36

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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.