Home / 13,398.96-18,499.24-8,621.04

Finding the Fourth Proportional to 13,398.96, 18,499.24 and 8,621.04

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Solution

The fourth proportional to 13,398.96, 18,499.24 and 8,621.04 is: 11,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.96 : 18,499.24 = 8,621.04 : x
  2. Step 2: Convert to fraction form
    13,398.96/18,499.24 = 8,621.04/x
  3. Step 3: Cross multiply
    13,398.96x = 18,499.24 × 8,621.04
  4. Step 4: Simplify right side
    13,398.96x = 159,482,688.01
  5. Step 5: Solve for x
    x = 159,482,688.01/13,398.96
  6. Step 6: Final answer
    x = 11,902.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.