Home / 21,247.11-31,870.31-7,395.75

Finding the Fourth Proportional to 21,247.11, 31,870.31 and 7,395.75

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Solution

The fourth proportional to 21,247.11, 31,870.31 and 7,395.75 is: 11,093.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.11 : 31,870.31 = 7,395.75 : x
  2. Step 2: Convert to fraction form
    21,247.11/31,870.31 = 7,395.75/x
  3. Step 3: Cross multiply
    21,247.11x = 31,870.31 × 7,395.75
  4. Step 4: Simplify right side
    21,247.11x = 235,704,808.20
  5. Step 5: Solve for x
    x = 235,704,808.20/21,247.11
  6. Step 6: Final answer
    x = 11,093.50

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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.