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Finding the Fourth Proportional to 15,807.44, 21,812.28 and 9,841.02

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Solution

The fourth proportional to 15,807.44, 21,812.28 and 9,841.02 is: 13,579.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.44 : 21,812.28 = 9,841.02 : x
  2. Step 2: Convert to fraction form
    15,807.44/21,812.28 = 9,841.02/x
  3. Step 3: Cross multiply
    15,807.44x = 21,812.28 × 9,841.02
  4. Step 4: Simplify right side
    15,807.44x = 214,655,083.73
  5. Step 5: Solve for x
    x = 214,655,083.73/15,807.44
  6. Step 6: Final answer
    x = 13,579.37

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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.