Home / 12,475.22-18,715.80-4,155.30

Finding the Fourth Proportional to 12,475.22, 18,715.80 and 4,155.30

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Solution

The fourth proportional to 12,475.22, 18,715.80 and 4,155.30 is: 6,233.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.22 : 18,715.80 = 4,155.30 : x
  2. Step 2: Convert to fraction form
    12,475.22/18,715.80 = 4,155.30/x
  3. Step 3: Cross multiply
    12,475.22x = 18,715.80 × 4,155.30
  4. Step 4: Simplify right side
    12,475.22x = 77,769,763.74
  5. Step 5: Solve for x
    x = 77,769,763.74/12,475.22
  6. Step 6: Final answer
    x = 6,233.94

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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.