Home / 10,974.84-15,145.32-10,137.68

Finding the Fourth Proportional to 10,974.84, 15,145.32 and 10,137.68

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Solution

The fourth proportional to 10,974.84, 15,145.32 and 10,137.68 is: 13,990.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,974.84 : 15,145.32 = 10,137.68 : x
  2. Step 2: Convert to fraction form
    10,974.84/15,145.32 = 10,137.68/x
  3. Step 3: Cross multiply
    10,974.84x = 15,145.32 × 10,137.68
  4. Step 4: Simplify right side
    10,974.84x = 153,538,407.66
  5. Step 5: Solve for x
    x = 153,538,407.66/10,974.84
  6. Step 6: Final answer
    x = 13,990.04

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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.