Home / 20,776.62-31,177.42-7,448.58

Finding the Fourth Proportional to 20,776.62, 31,177.42 and 7,448.58

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Solution

The fourth proportional to 20,776.62, 31,177.42 and 7,448.58 is: 11,177.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.62 : 31,177.42 = 7,448.58 : x
  2. Step 2: Convert to fraction form
    20,776.62/31,177.42 = 7,448.58/x
  3. Step 3: Cross multiply
    20,776.62x = 31,177.42 × 7,448.58
  4. Step 4: Simplify right side
    20,776.62x = 232,227,507.06
  5. Step 5: Solve for x
    x = 232,227,507.06/20,776.62
  6. Step 6: Final answer
    x = 11,177.35

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1.5x scale

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.