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Finding the Fourth Proportional to 40,398.48, 60,607.53 and 12,696.48

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Solution

The fourth proportional to 40,398.48, 60,607.53 and 12,696.48 is: 19,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,398.48 : 60,607.53 = 12,696.48 : x
  2. Step 2: Convert to fraction form
    40,398.48/60,607.53 = 12,696.48/x
  3. Step 3: Cross multiply
    40,398.48x = 60,607.53 × 12,696.48
  4. Step 4: Simplify right side
    40,398.48x = 769,502,292.49
  5. Step 5: Solve for x
    x = 769,502,292.49/40,398.48
  6. Step 6: Final answer
    x = 19,047.80

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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.