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Finding the Fourth Proportional to 12,602.12, 18,903.20 and 4,282.20

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Solution

The fourth proportional to 12,602.12, 18,903.20 and 4,282.20 is: 6,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.12 : 18,903.20 = 4,282.20 : x
  2. Step 2: Convert to fraction form
    12,602.12/18,903.20 = 4,282.20/x
  3. Step 3: Cross multiply
    12,602.12x = 18,903.20 × 4,282.20
  4. Step 4: Simplify right side
    12,602.12x = 80,947,283.04
  5. Step 5: Solve for x
    x = 80,947,283.04/12,602.12
  6. Step 6: Final answer
    x = 6,423.31

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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.