Home / 21,250.56-31,890.36-7,399.56

Finding the Fourth Proportional to 21,250.56, 31,890.36 and 7,399.56

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Solution

The fourth proportional to 21,250.56, 31,890.36 and 7,399.56 is: 11,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.56 : 31,890.36 = 7,399.56 : x
  2. Step 2: Convert to fraction form
    21,250.56/31,890.36 = 7,399.56/x
  3. Step 3: Cross multiply
    21,250.56x = 31,890.36 × 7,399.56
  4. Step 4: Simplify right side
    21,250.56x = 235,974,632.24
  5. Step 5: Solve for x
    x = 235,974,632.24/21,250.56
  6. Step 6: Final answer
    x = 11,104.40

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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.