Home / 20,959.98-31,450.33-15,437.81

Finding the Fourth Proportional to 20,959.98, 31,450.33 and 15,437.81

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Solution

The fourth proportional to 20,959.98, 31,450.33 and 15,437.81 is: 23,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.98 : 31,450.33 = 15,437.81 : x
  2. Step 2: Convert to fraction form
    20,959.98/31,450.33 = 15,437.81/x
  3. Step 3: Cross multiply
    20,959.98x = 31,450.33 × 15,437.81
  4. Step 4: Simplify right side
    20,959.98x = 485,524,061.73
  5. Step 5: Solve for x
    x = 485,524,061.73/20,959.98
  6. Step 6: Final answer
    x = 23,164.34

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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.