Home / 21,429.20-32,165.40-10,344.80

Finding the Fourth Proportional to 21,429.20, 32,165.40 and 10,344.80

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Solution

The fourth proportional to 21,429.20, 32,165.40 and 10,344.80 is: 15,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.20 : 32,165.40 = 10,344.80 : x
  2. Step 2: Convert to fraction form
    21,429.20/32,165.40 = 10,344.80/x
  3. Step 3: Cross multiply
    21,429.20x = 32,165.40 × 10,344.80
  4. Step 4: Simplify right side
    21,429.20x = 332,744,629.92
  5. Step 5: Solve for x
    x = 332,744,629.92/21,429.20
  6. Step 6: Final answer
    x = 15,527.63

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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.