Home / 30,946.68-42,716.19-19,768.68

Finding the Fourth Proportional to 30,946.68, 42,716.19 and 19,768.68

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Solution

The fourth proportional to 30,946.68, 42,716.19 and 19,768.68 is: 27,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,946.68 : 42,716.19 = 19,768.68 : x
  2. Step 2: Convert to fraction form
    30,946.68/42,716.19 = 19,768.68/x
  3. Step 3: Cross multiply
    30,946.68x = 42,716.19 × 19,768.68
  4. Step 4: Simplify right side
    30,946.68x = 844,442,690.93
  5. Step 5: Solve for x
    x = 844,442,690.93/30,946.68
  6. Step 6: Final answer
    x = 27,287.02

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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.