Home / 9,436.80-13,021.20-5,901.12

Finding the Fourth Proportional to 9,436.80, 13,021.20 and 5,901.12

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Solution

The fourth proportional to 9,436.80, 13,021.20 and 5,901.12 is: 8,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,436.80 : 13,021.20 = 5,901.12 : x
  2. Step 2: Convert to fraction form
    9,436.80/13,021.20 = 5,901.12/x
  3. Step 3: Cross multiply
    9,436.80x = 13,021.20 × 5,901.12
  4. Step 4: Simplify right side
    9,436.80x = 76,839,663.74
  5. Step 5: Solve for x
    x = 76,839,663.74/9,436.80
  6. Step 6: Final answer
    x = 8,142.56

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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.