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Finding the Fourth Proportional to 15,348, 21,171.60 and 10,041.60

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Solution

The fourth proportional to 15,348, 21,171.60 and 10,041.60 is: 13,851.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348 : 21,171.60 = 10,041.60 : x
  2. Step 2: Convert to fraction form
    15,348/21,171.60 = 10,041.60/x
  3. Step 3: Cross multiply
    15,348x = 21,171.60 × 10,041.60
  4. Step 4: Simplify right side
    15,348x = 212,596,738.56
  5. Step 5: Solve for x
    x = 212,596,738.56/15,348
  6. Step 6: Final answer
    x = 13,851.76

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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.