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Finding the Fourth Proportional to 40,293.84, 60,440.74 and 12,591.84

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Solution

The fourth proportional to 40,293.84, 60,440.74 and 12,591.84 is: 18,887.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,293.84 : 60,440.74 = 12,591.84 : x
  2. Step 2: Convert to fraction form
    40,293.84/60,440.74 = 12,591.84/x
  3. Step 3: Cross multiply
    40,293.84x = 60,440.74 × 12,591.84
  4. Step 4: Simplify right side
    40,293.84x = 761,060,127.56
  5. Step 5: Solve for x
    x = 761,060,127.56/40,293.84
  6. Step 6: Final answer
    x = 18,887.75

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1.5x scale

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.