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Finding the Fourth Proportional to 22,830, 31,506.08 and 12,758.88

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Solution

The fourth proportional to 22,830, 31,506.08 and 12,758.88 is: 17,607.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,830 : 31,506.08 = 12,758.88 : x
  2. Step 2: Convert to fraction form
    22,830/31,506.08 = 12,758.88/x
  3. Step 3: Cross multiply
    22,830x = 31,506.08 × 12,758.88
  4. Step 4: Simplify right side
    22,830x = 401,982,293.99
  5. Step 5: Solve for x
    x = 401,982,293.99/22,830
  6. Step 6: Final answer
    x = 17,607.63

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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.