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Finding the Fourth Proportional to 10,561.80, 15,836.80 and 4,326.16

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Solution

The fourth proportional to 10,561.80, 15,836.80 and 4,326.16 is: 6,486.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,561.80 : 15,836.80 = 4,326.16 : x
  2. Step 2: Convert to fraction form
    10,561.80/15,836.80 = 4,326.16/x
  3. Step 3: Cross multiply
    10,561.80x = 15,836.80 × 4,326.16
  4. Step 4: Simplify right side
    10,561.80x = 68,512,530.69
  5. Step 5: Solve for x
    x = 68,512,530.69/10,561.80
  6. Step 6: Final answer
    x = 6,486.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.