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Finding the Fourth Proportional to 15,482.50, 21,367.16 and 8,769.30

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Solution

The fourth proportional to 15,482.50, 21,367.16 and 8,769.30 is: 12,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,482.50 : 21,367.16 = 8,769.30 : x
  2. Step 2: Convert to fraction form
    15,482.50/21,367.16 = 8,769.30/x
  3. Step 3: Cross multiply
    15,482.50x = 21,367.16 × 8,769.30
  4. Step 4: Simplify right side
    15,482.50x = 187,375,036.19
  5. Step 5: Solve for x
    x = 187,375,036.19/15,482.50
  6. Step 6: Final answer
    x = 12,102.38

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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.