Home / 21,765.10-32,646.28-12,993.41

Finding the Fourth Proportional to 21,765.10, 32,646.28 and 12,993.41

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Solution

The fourth proportional to 21,765.10, 32,646.28 and 12,993.41 is: 19,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.10 : 32,646.28 = 12,993.41 : x
  2. Step 2: Convert to fraction form
    21,765.10/32,646.28 = 12,993.41/x
  3. Step 3: Cross multiply
    21,765.10x = 32,646.28 × 12,993.41
  4. Step 4: Simplify right side
    21,765.10x = 424,186,337.78
  5. Step 5: Solve for x
    x = 424,186,337.78/21,765.10
  6. Step 6: Final answer
    x = 19,489.29

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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.