Home / 21,564.20-29,756.48-12,132.56

Finding the Fourth Proportional to 21,564.20, 29,756.48 and 12,132.56

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Solution

The fourth proportional to 21,564.20, 29,756.48 and 12,132.56 is: 16,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.20 : 29,756.48 = 12,132.56 : x
  2. Step 2: Convert to fraction form
    21,564.20/29,756.48 = 12,132.56/x
  3. Step 3: Cross multiply
    21,564.20x = 29,756.48 × 12,132.56
  4. Step 4: Simplify right side
    21,564.20x = 361,022,278.99
  5. Step 5: Solve for x
    x = 361,022,278.99/21,564.20
  6. Step 6: Final answer
    x = 16,741.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.