Home / 31,986.60-44,138.50-30,911.74

Finding the Fourth Proportional to 31,986.60, 44,138.50 and 30,911.74

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Solution

The fourth proportional to 31,986.60, 44,138.50 and 30,911.74 is: 42,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.60 : 44,138.50 = 30,911.74 : x
  2. Step 2: Convert to fraction form
    31,986.60/44,138.50 = 30,911.74/x
  3. Step 3: Cross multiply
    31,986.60x = 44,138.50 × 30,911.74
  4. Step 4: Simplify right side
    31,986.60x = 1,364,397,648.36
  5. Step 5: Solve for x
    x = 1,364,397,648.36/31,986.60
  6. Step 6: Final answer
    x = 42,655.29

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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.