Home / 20,873.81-31,314.82-7,726.30

Finding the Fourth Proportional to 20,873.81, 31,314.82 and 7,726.30

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Solution

The fourth proportional to 20,873.81, 31,314.82 and 7,726.30 is: 11,590.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.81 : 31,314.82 = 7,726.30 : x
  2. Step 2: Convert to fraction form
    20,873.81/31,314.82 = 7,726.30/x
  3. Step 3: Cross multiply
    20,873.81x = 31,314.82 × 7,726.30
  4. Step 4: Simplify right side
    20,873.81x = 241,947,693.77
  5. Step 5: Solve for x
    x = 241,947,693.77/20,873.81
  6. Step 6: Final answer
    x = 11,590.97

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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.