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Finding the Fourth Proportional to 20,602.32, 30,903.12 and 5,020.08

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Solution

The fourth proportional to 20,602.32, 30,903.12 and 5,020.08 is: 7,530.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.32 : 30,903.12 = 5,020.08 : x
  2. Step 2: Convert to fraction form
    20,602.32/30,903.12 = 5,020.08/x
  3. Step 3: Cross multiply
    20,602.32x = 30,903.12 × 5,020.08
  4. Step 4: Simplify right side
    20,602.32x = 155,136,134.65
  5. Step 5: Solve for x
    x = 155,136,134.65/20,602.32
  6. Step 6: Final answer
    x = 7,530.03

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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.