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Finding the Fourth Proportional to 18,803.29, 28,205.46 and 5,655.62

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Solution

The fourth proportional to 18,803.29, 28,205.46 and 5,655.62 is: 8,483.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.29 : 28,205.46 = 5,655.62 : x
  2. Step 2: Convert to fraction form
    18,803.29/28,205.46 = 5,655.62/x
  3. Step 3: Cross multiply
    18,803.29x = 28,205.46 × 5,655.62
  4. Step 4: Simplify right side
    18,803.29x = 159,519,363.69
  5. Step 5: Solve for x
    x = 159,519,363.69/18,803.29
  6. Step 6: Final answer
    x = 8,483.59

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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.