Home / 10,908.97-15,036.42-7,718.20

Finding the Fourth Proportional to 10,908.97, 15,036.42 and 7,718.20

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Solution

The fourth proportional to 10,908.97, 15,036.42 and 7,718.20 is: 10,638.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.97 : 15,036.42 = 7,718.20 : x
  2. Step 2: Convert to fraction form
    10,908.97/15,036.42 = 7,718.20/x
  3. Step 3: Cross multiply
    10,908.97x = 15,036.42 × 7,718.20
  4. Step 4: Simplify right side
    10,908.97x = 116,054,096.84
  5. Step 5: Solve for x
    x = 116,054,096.84/10,908.97
  6. Step 6: Final answer
    x = 10,638.41

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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.