Home / 20,145.61-30,218.97-5,354.51

Finding the Fourth Proportional to 20,145.61, 30,218.97 and 5,354.51

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Solution

The fourth proportional to 20,145.61, 30,218.97 and 5,354.51 is: 8,031.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.61 : 30,218.97 = 5,354.51 : x
  2. Step 2: Convert to fraction form
    20,145.61/30,218.97 = 5,354.51/x
  3. Step 3: Cross multiply
    20,145.61x = 30,218.97 × 5,354.51
  4. Step 4: Simplify right side
    20,145.61x = 161,807,646.04
  5. Step 5: Solve for x
    x = 161,807,646.04/20,145.61
  6. Step 6: Final answer
    x = 8,031.91

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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.