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Finding the Fourth Proportional to 15,552, 21,469.42 and 10,775.57

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Solution

The fourth proportional to 15,552, 21,469.42 and 10,775.57 is: 14,875.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552 : 21,469.42 = 10,775.57 : x
  2. Step 2: Convert to fraction form
    15,552/21,469.42 = 10,775.57/x
  3. Step 3: Cross multiply
    15,552x = 21,469.42 × 10,775.57
  4. Step 4: Simplify right side
    15,552x = 231,345,144.19
  5. Step 5: Solve for x
    x = 231,345,144.19/15,552
  6. Step 6: Final answer
    x = 14,875.59

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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.