Home / 21,836.40-32,754.60-12,505.20

Finding the Fourth Proportional to 21,836.40, 32,754.60 and 12,505.20

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Solution

The fourth proportional to 21,836.40, 32,754.60 and 12,505.20 is: 18,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.40 : 32,754.60 = 12,505.20 : x
  2. Step 2: Convert to fraction form
    21,836.40/32,754.60 = 12,505.20/x
  3. Step 3: Cross multiply
    21,836.40x = 32,754.60 × 12,505.20
  4. Step 4: Simplify right side
    21,836.40x = 409,602,823.92
  5. Step 5: Solve for x
    x = 409,602,823.92/21,836.40
  6. Step 6: Final answer
    x = 18,757.80

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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.