Home / 31,150.86-42,988.77-17,004.21

Finding the Fourth Proportional to 31,150.86, 42,988.77 and 17,004.21

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Solution

The fourth proportional to 31,150.86, 42,988.77 and 17,004.21 is: 23,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,150.86 : 42,988.77 = 17,004.21 : x
  2. Step 2: Convert to fraction form
    31,150.86/42,988.77 = 17,004.21/x
  3. Step 3: Cross multiply
    31,150.86x = 42,988.77 × 17,004.21
  4. Step 4: Simplify right side
    31,150.86x = 730,990,072.72
  5. Step 5: Solve for x
    x = 730,990,072.72/31,150.86
  6. Step 6: Final answer
    x = 23,466.13

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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.