Home / 21,438.74-32,158.12-8,951.96

Finding the Fourth Proportional to 21,438.74, 32,158.12 and 8,951.96

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Solution

The fourth proportional to 21,438.74, 32,158.12 and 8,951.96 is: 13,427.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.74 : 32,158.12 = 8,951.96 : x
  2. Step 2: Convert to fraction form
    21,438.74/32,158.12 = 8,951.96/x
  3. Step 3: Cross multiply
    21,438.74x = 32,158.12 × 8,951.96
  4. Step 4: Simplify right side
    21,438.74x = 287,878,043.12
  5. Step 5: Solve for x
    x = 287,878,043.12/21,438.74
  6. Step 6: Final answer
    x = 13,427.94

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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.