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Finding the Fourth Proportional to 15,009.80, 22,515.82 and 4,478.99

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Solution

The fourth proportional to 15,009.80, 22,515.82 and 4,478.99 is: 6,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.80 : 22,515.82 = 4,478.99 : x
  2. Step 2: Convert to fraction form
    15,009.80/22,515.82 = 4,478.99/x
  3. Step 3: Cross multiply
    15,009.80x = 22,515.82 × 4,478.99
  4. Step 4: Simplify right side
    15,009.80x = 100,848,008.85
  5. Step 5: Solve for x
    x = 100,848,008.85/15,009.80
  6. Step 6: Final answer
    x = 6,718.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.