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Finding the Fourth Proportional to 15,604.03, 21,531.07 and 8,889.78

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Solution

The fourth proportional to 15,604.03, 21,531.07 and 8,889.78 is: 12,266.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,604.03 : 21,531.07 = 8,889.78 : x
  2. Step 2: Convert to fraction form
    15,604.03/21,531.07 = 8,889.78/x
  3. Step 3: Cross multiply
    15,604.03x = 21,531.07 × 8,889.78
  4. Step 4: Simplify right side
    15,604.03x = 191,406,475.46
  5. Step 5: Solve for x
    x = 191,406,475.46/15,604.03
  6. Step 6: Final answer
    x = 12,266.48

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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.