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Finding the Fourth Proportional to 10,797.13, 14,919.29 and 8,457.04

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Solution

The fourth proportional to 10,797.13, 14,919.29 and 8,457.04 is: 11,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,797.13 : 14,919.29 = 8,457.04 : x
  2. Step 2: Convert to fraction form
    10,797.13/14,919.29 = 8,457.04/x
  3. Step 3: Cross multiply
    10,797.13x = 14,919.29 × 8,457.04
  4. Step 4: Simplify right side
    10,797.13x = 126,173,032.30
  5. Step 5: Solve for x
    x = 126,173,032.30/10,797.13
  6. Step 6: Final answer
    x = 11,685.79

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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.