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Finding the Fourth Proportional to 15,030.11, 20,743.10 and 8,656.91

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Solution

The fourth proportional to 15,030.11, 20,743.10 and 8,656.91 is: 11,947.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.11 : 20,743.10 = 8,656.91 : x
  2. Step 2: Convert to fraction form
    15,030.11/20,743.10 = 8,656.91/x
  3. Step 3: Cross multiply
    15,030.11x = 20,743.10 × 8,656.91
  4. Step 4: Simplify right side
    15,030.11x = 179,571,149.82
  5. Step 5: Solve for x
    x = 179,571,149.82/15,030.11
  6. Step 6: Final answer
    x = 11,947.43

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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.