Home / 20,823.10-31,248.48-9,730.64

Finding the Fourth Proportional to 20,823.10, 31,248.48 and 9,730.64

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Solution

The fourth proportional to 20,823.10, 31,248.48 and 9,730.64 is: 14,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.10 : 31,248.48 = 9,730.64 : x
  2. Step 2: Convert to fraction form
    20,823.10/31,248.48 = 9,730.64/x
  3. Step 3: Cross multiply
    20,823.10x = 31,248.48 × 9,730.64
  4. Step 4: Simplify right side
    20,823.10x = 304,067,787.55
  5. Step 5: Solve for x
    x = 304,067,787.55/20,823.10
  6. Step 6: Final answer
    x = 14,602.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.