Home / 30,222.28-45,356.30-21,784.71

Finding the Fourth Proportional to 30,222.28, 45,356.30 and 21,784.71

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Solution

The fourth proportional to 30,222.28, 45,356.30 and 21,784.71 is: 32,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,222.28 : 45,356.30 = 21,784.71 : x
  2. Step 2: Convert to fraction form
    30,222.28/45,356.30 = 21,784.71/x
  3. Step 3: Cross multiply
    30,222.28x = 45,356.30 × 21,784.71
  4. Step 4: Simplify right side
    30,222.28x = 988,073,733.25
  5. Step 5: Solve for x
    x = 988,073,733.25/30,222.28
  6. Step 6: Final answer
    x = 32,693.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.