Home / 20,959.08-31,438.64-5,376.71

Finding the Fourth Proportional to 20,959.08, 31,438.64 and 5,376.71

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Solution

The fourth proportional to 20,959.08, 31,438.64 and 5,376.71 is: 8,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.08 : 31,438.64 = 5,376.71 : x
  2. Step 2: Convert to fraction form
    20,959.08/31,438.64 = 5,376.71/x
  3. Step 3: Cross multiply
    20,959.08x = 31,438.64 × 5,376.71
  4. Step 4: Simplify right side
    20,959.08x = 169,036,266.00
  5. Step 5: Solve for x
    x = 169,036,266.00/20,959.08
  6. Step 6: Final answer
    x = 8,065.06

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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.