Home / 13,490.80-20,237.67-5,177.88

Finding the Fourth Proportional to 13,490.80, 20,237.67 and 5,177.88

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Solution

The fourth proportional to 13,490.80, 20,237.67 and 5,177.88 is: 7,767.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.80 : 20,237.67 = 5,177.88 : x
  2. Step 2: Convert to fraction form
    13,490.80/20,237.67 = 5,177.88/x
  3. Step 3: Cross multiply
    13,490.80x = 20,237.67 × 5,177.88
  4. Step 4: Simplify right side
    13,490.80x = 104,788,226.74
  5. Step 5: Solve for x
    x = 104,788,226.74/13,490.80
  6. Step 6: Final answer
    x = 7,767.38

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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.