Home / 42,379.80-63,572.13-12,800.63

Finding the Fourth Proportional to 42,379.80, 63,572.13 and 12,800.63

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Solution

The fourth proportional to 42,379.80, 63,572.13 and 12,800.63 is: 19,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,379.80 : 63,572.13 = 12,800.63 : x
  2. Step 2: Convert to fraction form
    42,379.80/63,572.13 = 12,800.63/x
  3. Step 3: Cross multiply
    42,379.80x = 63,572.13 × 12,800.63
  4. Step 4: Simplify right side
    42,379.80x = 813,762,996.58
  5. Step 5: Solve for x
    x = 813,762,996.58/42,379.80
  6. Step 6: Final answer
    x = 19,201.67

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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.