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Finding the Fourth Proportional to 12,579.99, 17,360.71 and 7,275.14

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Solution

The fourth proportional to 12,579.99, 17,360.71 and 7,275.14 is: 10,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.99 : 17,360.71 = 7,275.14 : x
  2. Step 2: Convert to fraction form
    12,579.99/17,360.71 = 7,275.14/x
  3. Step 3: Cross multiply
    12,579.99x = 17,360.71 × 7,275.14
  4. Step 4: Simplify right side
    12,579.99x = 126,301,595.75
  5. Step 5: Solve for x
    x = 126,301,595.75/12,579.99
  6. Step 6: Final answer
    x = 10,039.88

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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.