Home / 40,415.20-60,608.40-14,120.80

Finding the Fourth Proportional to 40,415.20, 60,608.40 and 14,120.80

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Solution

The fourth proportional to 40,415.20, 60,608.40 and 14,120.80 is: 21,176.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,415.20 : 60,608.40 = 14,120.80 : x
  2. Step 2: Convert to fraction form
    40,415.20/60,608.40 = 14,120.80/x
  3. Step 3: Cross multiply
    40,415.20x = 60,608.40 × 14,120.80
  4. Step 4: Simplify right side
    40,415.20x = 855,839,094.72
  5. Step 5: Solve for x
    x = 855,839,094.72/40,415.20
  6. Step 6: Final answer
    x = 21,176.17

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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.