Home / 11,512.28-17,340.74-10,478.84

Finding the Fourth Proportional to 11,512.28, 17,340.74 and 10,478.84

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Solution

The fourth proportional to 11,512.28, 17,340.74 and 10,478.84 is: 15,784.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,512.28 : 17,340.74 = 10,478.84 : x
  2. Step 2: Convert to fraction form
    11,512.28/17,340.74 = 10,478.84/x
  3. Step 3: Cross multiply
    11,512.28x = 17,340.74 × 10,478.84
  4. Step 4: Simplify right side
    11,512.28x = 181,710,839.94
  5. Step 5: Solve for x
    x = 181,710,839.94/11,512.28
  6. Step 6: Final answer
    x = 15,784.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.