Home / 30,784.94-42,480.15-18,851.66

Finding the Fourth Proportional to 30,784.94, 42,480.15 and 18,851.66

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Solution

The fourth proportional to 30,784.94, 42,480.15 and 18,851.66 is: 26,013.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,784.94 : 42,480.15 = 18,851.66 : x
  2. Step 2: Convert to fraction form
    30,784.94/42,480.15 = 18,851.66/x
  3. Step 3: Cross multiply
    30,784.94x = 42,480.15 × 18,851.66
  4. Step 4: Simplify right side
    30,784.94x = 800,821,344.55
  5. Step 5: Solve for x
    x = 800,821,344.55/30,784.94
  6. Step 6: Final answer
    x = 26,013.41

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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.