Home / 30,718.44-45,990.18-20,177.10

Finding the Fourth Proportional to 30,718.44, 45,990.18 and 20,177.10

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Solution

The fourth proportional to 30,718.44, 45,990.18 and 20,177.10 is: 30,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.44 : 45,990.18 = 20,177.10 : x
  2. Step 2: Convert to fraction form
    30,718.44/45,990.18 = 20,177.10/x
  3. Step 3: Cross multiply
    30,718.44x = 45,990.18 × 20,177.10
  4. Step 4: Simplify right side
    30,718.44x = 927,948,460.88
  5. Step 5: Solve for x
    x = 927,948,460.88/30,718.44
  6. Step 6: Final answer
    x = 30,208.19

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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.