Home / 30,809.24-42,517.32-18,071.56

Finding the Fourth Proportional to 30,809.24, 42,517.32 and 18,071.56

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Solution

The fourth proportional to 30,809.24, 42,517.32 and 18,071.56 is: 24,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.24 : 42,517.32 = 18,071.56 : x
  2. Step 2: Convert to fraction form
    30,809.24/42,517.32 = 18,071.56/x
  3. Step 3: Cross multiply
    30,809.24x = 42,517.32 × 18,071.56
  4. Step 4: Simplify right side
    30,809.24x = 768,354,299.42
  5. Step 5: Solve for x
    x = 768,354,299.42/30,809.24
  6. Step 6: Final answer
    x = 24,939.09

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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.