Home / 31,209.90-42,851.87-30,397.74

Finding the Fourth Proportional to 31,209.90, 42,851.87 and 30,397.74

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Solution

The fourth proportional to 31,209.90, 42,851.87 and 30,397.74 is: 41,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,209.90 : 42,851.87 = 30,397.74 : x
  2. Step 2: Convert to fraction form
    31,209.90/42,851.87 = 30,397.74/x
  3. Step 3: Cross multiply
    31,209.90x = 42,851.87 × 30,397.74
  4. Step 4: Simplify right side
    31,209.90x = 1,302,599,850.79
  5. Step 5: Solve for x
    x = 1,302,599,850.79/31,209.90
  6. Step 6: Final answer
    x = 41,736.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.