Home / 10,287.90-14,187.36-8,694.59

Finding the Fourth Proportional to 10,287.90, 14,187.36 and 8,694.59

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Solution

The fourth proportional to 10,287.90, 14,187.36 and 8,694.59 is: 11,990.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.90 : 14,187.36 = 8,694.59 : x
  2. Step 2: Convert to fraction form
    10,287.90/14,187.36 = 8,694.59/x
  3. Step 3: Cross multiply
    10,287.90x = 14,187.36 × 8,694.59
  4. Step 4: Simplify right side
    10,287.90x = 123,353,240.05
  5. Step 5: Solve for x
    x = 123,353,240.05/10,287.90
  6. Step 6: Final answer
    x = 11,990.13

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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.