Home / 21,373.40-32,050.01-12,491.28

Finding the Fourth Proportional to 21,373.40, 32,050.01 and 12,491.28

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Solution

The fourth proportional to 21,373.40, 32,050.01 and 12,491.28 is: 18,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.40 : 32,050.01 = 12,491.28 : x
  2. Step 2: Convert to fraction form
    21,373.40/32,050.01 = 12,491.28/x
  3. Step 3: Cross multiply
    21,373.40x = 32,050.01 × 12,491.28
  4. Step 4: Simplify right side
    21,373.40x = 400,345,680.14
  5. Step 5: Solve for x
    x = 400,345,680.14/21,373.40
  6. Step 6: Final answer
    x = 18,731.02

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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.