Home / 15,411.96-21,268.20-8,338.32

Finding the Fourth Proportional to 15,411.96, 21,268.20 and 8,338.32

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Solution

The fourth proportional to 15,411.96, 21,268.20 and 8,338.32 is: 11,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.96 : 21,268.20 = 8,338.32 : x
  2. Step 2: Convert to fraction form
    15,411.96/21,268.20 = 8,338.32/x
  3. Step 3: Cross multiply
    15,411.96x = 21,268.20 × 8,338.32
  4. Step 4: Simplify right side
    15,411.96x = 177,341,057.42
  5. Step 5: Solve for x
    x = 177,341,057.42/15,411.96
  6. Step 6: Final answer
    x = 11,506.72

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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.