Home / 21,421.24-32,121.06-8,938.02

Finding the Fourth Proportional to 21,421.24, 32,121.06 and 8,938.02

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Solution

The fourth proportional to 21,421.24, 32,121.06 and 8,938.02 is: 13,402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.24 : 32,121.06 = 8,938.02 : x
  2. Step 2: Convert to fraction form
    21,421.24/32,121.06 = 8,938.02/x
  3. Step 3: Cross multiply
    21,421.24x = 32,121.06 × 8,938.02
  4. Step 4: Simplify right side
    21,421.24x = 287,098,676.70
  5. Step 5: Solve for x
    x = 287,098,676.70/21,421.24
  6. Step 6: Final answer
    x = 13,402.52

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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.