Home / 30,635.73-42,276.21-18,719.01

Finding the Fourth Proportional to 30,635.73, 42,276.21 and 18,719.01

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Solution

The fourth proportional to 30,635.73, 42,276.21 and 18,719.01 is: 25,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,635.73 : 42,276.21 = 18,719.01 : x
  2. Step 2: Convert to fraction form
    30,635.73/42,276.21 = 18,719.01/x
  3. Step 3: Cross multiply
    30,635.73x = 42,276.21 × 18,719.01
  4. Step 4: Simplify right side
    30,635.73x = 791,368,797.75
  5. Step 5: Solve for x
    x = 791,368,797.75/30,635.73
  6. Step 6: Final answer
    x = 25,831.56

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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.