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Finding the Fourth Proportional to 14,848, 20,490.24 and 8,225.28

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Solution

The fourth proportional to 14,848, 20,490.24 and 8,225.28 is: 11,350.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,848 : 20,490.24 = 8,225.28 : x
  2. Step 2: Convert to fraction form
    14,848/20,490.24 = 8,225.28/x
  3. Step 3: Cross multiply
    14,848x = 20,490.24 × 8,225.28
  4. Step 4: Simplify right side
    14,848x = 168,537,961.27
  5. Step 5: Solve for x
    x = 168,537,961.27/14,848
  6. Step 6: Final answer
    x = 11,350.89

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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.