Home / 40,693.07-61,040.21-12,612.80

Finding the Fourth Proportional to 40,693.07, 61,040.21 and 12,612.80

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Solution

The fourth proportional to 40,693.07, 61,040.21 and 12,612.80 is: 18,919.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,693.07 : 61,040.21 = 12,612.80 : x
  2. Step 2: Convert to fraction form
    40,693.07/61,040.21 = 12,612.80/x
  3. Step 3: Cross multiply
    40,693.07x = 61,040.21 × 12,612.80
  4. Step 4: Simplify right side
    40,693.07x = 769,887,592.42
  5. Step 5: Solve for x
    x = 769,887,592.42/40,693.07
  6. Step 6: Final answer
    x = 18,919.38

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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.