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Finding the Fourth Proportional to 15,007.06, 20,713.08 and 8,723.08

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Solution

The fourth proportional to 15,007.06, 20,713.08 and 8,723.08 is: 12,039.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.06 : 20,713.08 = 8,723.08 : x
  2. Step 2: Convert to fraction form
    15,007.06/20,713.08 = 8,723.08/x
  3. Step 3: Cross multiply
    15,007.06x = 20,713.08 × 8,723.08
  4. Step 4: Simplify right side
    15,007.06x = 180,681,853.89
  5. Step 5: Solve for x
    x = 180,681,853.89/15,007.06
  6. Step 6: Final answer
    x = 12,039.79

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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.