Home / 20,305.80-30,458.40-5,516.10

Finding the Fourth Proportional to 20,305.80, 30,458.40 and 5,516.10

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Solution

The fourth proportional to 20,305.80, 30,458.40 and 5,516.10 is: 8,274.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.80 : 30,458.40 = 5,516.10 : x
  2. Step 2: Convert to fraction form
    20,305.80/30,458.40 = 5,516.10/x
  3. Step 3: Cross multiply
    20,305.80x = 30,458.40 × 5,516.10
  4. Step 4: Simplify right side
    20,305.80x = 168,011,580.24
  5. Step 5: Solve for x
    x = 168,011,580.24/20,305.80
  6. Step 6: Final answer
    x = 8,274.07

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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.