Home / 28,271.80-42,343.11-13,491.10

Finding the Fourth Proportional to 28,271.80, 42,343.11 and 13,491.10

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Solution

The fourth proportional to 28,271.80, 42,343.11 and 13,491.10 is: 20,205.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.80 : 42,343.11 = 13,491.10 : x
  2. Step 2: Convert to fraction form
    28,271.80/42,343.11 = 13,491.10/x
  3. Step 3: Cross multiply
    28,271.80x = 42,343.11 × 13,491.10
  4. Step 4: Simplify right side
    28,271.80x = 571,255,165.05
  5. Step 5: Solve for x
    x = 571,255,165.05/28,271.80
  6. Step 6: Final answer
    x = 20,205.83

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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.