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Finding the Fourth Proportional to 20,602.63, 30,903.96 and 5,020.12

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Solution

The fourth proportional to 20,602.63, 30,903.96 and 5,020.12 is: 7,530.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.63 : 30,903.96 = 5,020.12 : x
  2. Step 2: Convert to fraction form
    20,602.63/30,903.96 = 5,020.12/x
  3. Step 3: Cross multiply
    20,602.63x = 30,903.96 × 5,020.12
  4. Step 4: Simplify right side
    20,602.63x = 155,141,587.68
  5. Step 5: Solve for x
    x = 155,141,587.68/20,602.63
  6. Step 6: Final answer
    x = 7,530.18

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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.