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Finding the Fourth Proportional to 40,347.84, 60,521.76 and 12,648

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Solution

The fourth proportional to 40,347.84, 60,521.76 and 12,648 is: 18,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,347.84 : 60,521.76 = 12,648 : x
  2. Step 2: Convert to fraction form
    40,347.84/60,521.76 = 12,648/x
  3. Step 3: Cross multiply
    40,347.84x = 60,521.76 × 12,648
  4. Step 4: Simplify right side
    40,347.84x = 765,479,220.48
  5. Step 5: Solve for x
    x = 765,479,220.48/40,347.84
  6. Step 6: Final answer
    x = 18,972.00

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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.