Home / 11,471.24-15,824.95-7,220.36

Finding the Fourth Proportional to 11,471.24, 15,824.95 and 7,220.36

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Solution

The fourth proportional to 11,471.24, 15,824.95 and 7,220.36 is: 9,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,471.24 : 15,824.95 = 7,220.36 : x
  2. Step 2: Convert to fraction form
    11,471.24/15,824.95 = 7,220.36/x
  3. Step 3: Cross multiply
    11,471.24x = 15,824.95 × 7,220.36
  4. Step 4: Simplify right side
    11,471.24x = 114,261,835.98
  5. Step 5: Solve for x
    x = 114,261,835.98/11,471.24
  6. Step 6: Final answer
    x = 9,960.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.