Home / 31,120.74-42,950.21-17,324.46

Finding the Fourth Proportional to 31,120.74, 42,950.21 and 17,324.46

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Solution

The fourth proportional to 31,120.74, 42,950.21 and 17,324.46 is: 23,909.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.74 : 42,950.21 = 17,324.46 : x
  2. Step 2: Convert to fraction form
    31,120.74/42,950.21 = 17,324.46/x
  3. Step 3: Cross multiply
    31,120.74x = 42,950.21 × 17,324.46
  4. Step 4: Simplify right side
    31,120.74x = 744,089,108.51
  5. Step 5: Solve for x
    x = 744,089,108.51/31,120.74
  6. Step 6: Final answer
    x = 23,909.75

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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.