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Finding the Fourth Proportional to 15,367.50, 21,207.54 and 8,653.38

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Solution

The fourth proportional to 15,367.50, 21,207.54 and 8,653.38 is: 11,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.50 : 21,207.54 = 8,653.38 : x
  2. Step 2: Convert to fraction form
    15,367.50/21,207.54 = 8,653.38/x
  3. Step 3: Cross multiply
    15,367.50x = 21,207.54 × 8,653.38
  4. Step 4: Simplify right side
    15,367.50x = 183,516,902.49
  5. Step 5: Solve for x
    x = 183,516,902.49/15,367.50
  6. Step 6: Final answer
    x = 11,941.88

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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.