Home / 31,639.86-43,661.97-17,490.78

Finding the Fourth Proportional to 31,639.86, 43,661.97 and 17,490.78

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Solution

The fourth proportional to 31,639.86, 43,661.97 and 17,490.78 is: 24,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.86 : 43,661.97 = 17,490.78 : x
  2. Step 2: Convert to fraction form
    31,639.86/43,661.97 = 17,490.78/x
  3. Step 3: Cross multiply
    31,639.86x = 43,661.97 × 17,490.78
  4. Step 4: Simplify right side
    31,639.86x = 763,681,911.64
  5. Step 5: Solve for x
    x = 763,681,911.64/31,639.86
  6. Step 6: Final answer
    x = 24,136.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.