Home / 15,542.80-21,440.64-9,253.96

Finding the Fourth Proportional to 15,542.80, 21,440.64 and 9,253.96

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Solution

The fourth proportional to 15,542.80, 21,440.64 and 9,253.96 is: 12,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.80 : 21,440.64 = 9,253.96 : x
  2. Step 2: Convert to fraction form
    15,542.80/21,440.64 = 9,253.96/x
  3. Step 3: Cross multiply
    15,542.80x = 21,440.64 × 9,253.96
  4. Step 4: Simplify right side
    15,542.80x = 198,410,824.93
  5. Step 5: Solve for x
    x = 198,410,824.93/15,542.80
  6. Step 6: Final answer
    x = 12,765.45

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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.