Home / 21,420.80-32,138.40-10,334.24

Finding the Fourth Proportional to 21,420.80, 32,138.40 and 10,334.24

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Solution

The fourth proportional to 21,420.80, 32,138.40 and 10,334.24 is: 15,504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.80 : 32,138.40 = 10,334.24 : x
  2. Step 2: Convert to fraction form
    21,420.80/32,138.40 = 10,334.24/x
  3. Step 3: Cross multiply
    21,420.80x = 32,138.40 × 10,334.24
  4. Step 4: Simplify right side
    21,420.80x = 332,125,938.82
  5. Step 5: Solve for x
    x = 332,125,938.82/21,420.80
  6. Step 6: Final answer
    x = 15,504.83

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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.