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Finding the Fourth Proportional to 11,394.80, 15,721.88 and 10,602.02

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Solution

The fourth proportional to 11,394.80, 15,721.88 and 10,602.02 is: 14,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,394.80 : 15,721.88 = 10,602.02 : x
  2. Step 2: Convert to fraction form
    11,394.80/15,721.88 = 10,602.02/x
  3. Step 3: Cross multiply
    11,394.80x = 15,721.88 × 10,602.02
  4. Step 4: Simplify right side
    11,394.80x = 166,683,686.20
  5. Step 5: Solve for x
    x = 166,683,686.20/11,394.80
  6. Step 6: Final answer
    x = 14,628.05

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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.