Home / 20,308.12-30,462.81-5,516.98

Finding the Fourth Proportional to 20,308.12, 30,462.81 and 5,516.98

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Solution

The fourth proportional to 20,308.12, 30,462.81 and 5,516.98 is: 8,275.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.12 : 30,462.81 = 5,516.98 : x
  2. Step 2: Convert to fraction form
    20,308.12/30,462.81 = 5,516.98/x
  3. Step 3: Cross multiply
    20,308.12x = 30,462.81 × 5,516.98
  4. Step 4: Simplify right side
    20,308.12x = 168,062,713.51
  5. Step 5: Solve for x
    x = 168,062,713.51/20,308.12
  6. Step 6: Final answer
    x = 8,275.64

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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.