Home / 30,500.08-42,077.68-18,553.84

Finding the Fourth Proportional to 30,500.08, 42,077.68 and 18,553.84

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Solution

The fourth proportional to 30,500.08, 42,077.68 and 18,553.84 is: 25,596.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,500.08 : 42,077.68 = 18,553.84 : x
  2. Step 2: Convert to fraction form
    30,500.08/42,077.68 = 18,553.84/x
  3. Step 3: Cross multiply
    30,500.08x = 42,077.68 × 18,553.84
  4. Step 4: Simplify right side
    30,500.08x = 780,702,542.29
  5. Step 5: Solve for x
    x = 780,702,542.29/30,500.08
  6. Step 6: Final answer
    x = 25,596.74

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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.