Home / 15,411.81-21,268.26-8,338.35

Finding the Fourth Proportional to 15,411.81, 21,268.26 and 8,338.35

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Solution

The fourth proportional to 15,411.81, 21,268.26 and 8,338.35 is: 11,506.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.81 : 21,268.26 = 8,338.35 : x
  2. Step 2: Convert to fraction form
    15,411.81/21,268.26 = 8,338.35/x
  3. Step 3: Cross multiply
    15,411.81x = 21,268.26 × 8,338.35
  4. Step 4: Simplify right side
    15,411.81x = 177,342,195.77
  5. Step 5: Solve for x
    x = 177,342,195.77/15,411.81
  6. Step 6: Final answer
    x = 11,506.90

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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.