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Finding the Fourth Proportional to 40,380.94, 60,573.84 and 12,678.94

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Solution

The fourth proportional to 40,380.94, 60,573.84 and 12,678.94 is: 19,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,380.94 : 60,573.84 = 12,678.94 : x
  2. Step 2: Convert to fraction form
    40,380.94/60,573.84 = 12,678.94/x
  3. Step 3: Cross multiply
    40,380.94x = 60,573.84 × 12,678.94
  4. Step 4: Simplify right side
    40,380.94x = 768,011,931.50
  5. Step 5: Solve for x
    x = 768,011,931.50/40,380.94
  6. Step 6: Final answer
    x = 19,019.17

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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.