Home / 30,766.77-42,458.58-18,191.52

Finding the Fourth Proportional to 30,766.77, 42,458.58 and 18,191.52

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Solution

The fourth proportional to 30,766.77, 42,458.58 and 18,191.52 is: 25,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,766.77 : 42,458.58 = 18,191.52 : x
  2. Step 2: Convert to fraction form
    30,766.77/42,458.58 = 18,191.52/x
  3. Step 3: Cross multiply
    30,766.77x = 42,458.58 × 18,191.52
  4. Step 4: Simplify right side
    30,766.77x = 772,386,107.24
  5. Step 5: Solve for x
    x = 772,386,107.24/30,766.77
  6. Step 6: Final answer
    x = 25,104.56

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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.