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Finding the Fourth Proportional to 40,832, 61,248 and 13,130

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Solution

The fourth proportional to 40,832, 61,248 and 13,130 is: 19,695

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,832 : 61,248 = 13,130 : x
  2. Step 2: Convert to fraction form
    40,832/61,248 = 13,130/x
  3. Step 3: Cross multiply
    40,832x = 61,248 × 13,130
  4. Step 4: Simplify right side
    40,832x = 804,186,240
  5. Step 5: Solve for x
    x = 804,186,240/40,832
  6. Step 6: Final answer
    x = 19,695

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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.