Home / 11,288.36-15,542.28-9,943.13

Finding the Fourth Proportional to 11,288.36, 15,542.28 and 9,943.13

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Solution

The fourth proportional to 11,288.36, 15,542.28 and 9,943.13 is: 13,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.36 : 15,542.28 = 9,943.13 : x
  2. Step 2: Convert to fraction form
    11,288.36/15,542.28 = 9,943.13/x
  3. Step 3: Cross multiply
    11,288.36x = 15,542.28 × 9,943.13
  4. Step 4: Simplify right side
    11,288.36x = 154,538,832.83
  5. Step 5: Solve for x
    x = 154,538,832.83/11,288.36
  6. Step 6: Final answer
    x = 13,690.11

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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.