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Finding the Fourth Proportional to 15,009.06, 20,715.06 and 8,725.08

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Solution

The fourth proportional to 15,009.06, 20,715.06 and 8,725.08 is: 12,042.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.06 : 20,715.06 = 8,725.08 : x
  2. Step 2: Convert to fraction form
    15,009.06/20,715.06 = 8,725.08/x
  3. Step 3: Cross multiply
    15,009.06x = 20,715.06 × 8,725.08
  4. Step 4: Simplify right side
    15,009.06x = 180,740,555.70
  5. Step 5: Solve for x
    x = 180,740,555.70/15,009.06
  6. Step 6: Final answer
    x = 12,042.10

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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.