Home / 20,485.08-30,737.18-10,618.97

Finding the Fourth Proportional to 20,485.08, 30,737.18 and 10,618.97

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Solution

The fourth proportional to 20,485.08, 30,737.18 and 10,618.97 is: 15,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.08 : 30,737.18 = 10,618.97 : x
  2. Step 2: Convert to fraction form
    20,485.08/30,737.18 = 10,618.97/x
  3. Step 3: Cross multiply
    20,485.08x = 30,737.18 × 10,618.97
  4. Step 4: Simplify right side
    20,485.08x = 326,397,192.30
  5. Step 5: Solve for x
    x = 326,397,192.30/20,485.08
  6. Step 6: Final answer
    x = 15,933.41

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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.