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Finding the Fourth Proportional to 15,097.50, 20,834.55 and 8,809.92

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Solution

The fourth proportional to 15,097.50, 20,834.55 and 8,809.92 is: 12,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,097.50 : 20,834.55 = 8,809.92 : x
  2. Step 2: Convert to fraction form
    15,097.50/20,834.55 = 8,809.92/x
  3. Step 3: Cross multiply
    15,097.50x = 20,834.55 × 8,809.92
  4. Step 4: Simplify right side
    15,097.50x = 183,550,718.74
  5. Step 5: Solve for x
    x = 183,550,718.74/15,097.50
  6. Step 6: Final answer
    x = 12,157.69

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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.