Home / 20,298.97-28,012.09-11,347.30

Finding the Fourth Proportional to 20,298.97, 28,012.09 and 11,347.30

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Solution

The fourth proportional to 20,298.97, 28,012.09 and 11,347.30 is: 15,659.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.97 : 28,012.09 = 11,347.30 : x
  2. Step 2: Convert to fraction form
    20,298.97/28,012.09 = 11,347.30/x
  3. Step 3: Cross multiply
    20,298.97x = 28,012.09 × 11,347.30
  4. Step 4: Simplify right side
    20,298.97x = 317,861,672.13
  5. Step 5: Solve for x
    x = 317,861,672.13/20,298.97
  6. Step 6: Final answer
    x = 15,659.01

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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.