Home / 21,429.20-32,143.80-15,524.30

Finding the Fourth Proportional to 21,429.20, 32,143.80 and 15,524.30

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Solution

The fourth proportional to 21,429.20, 32,143.80 and 15,524.30 is: 23,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.20 : 32,143.80 = 15,524.30 : x
  2. Step 2: Convert to fraction form
    21,429.20/32,143.80 = 15,524.30/x
  3. Step 3: Cross multiply
    21,429.20x = 32,143.80 × 15,524.30
  4. Step 4: Simplify right side
    21,429.20x = 499,009,994.34
  5. Step 5: Solve for x
    x = 499,009,994.34/21,429.20
  6. Step 6: Final answer
    x = 23,286.45

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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.