Home / 15,411.53-21,268.07-8,338.11

Finding the Fourth Proportional to 15,411.53, 21,268.07 and 8,338.11

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Solution

The fourth proportional to 15,411.53, 21,268.07 and 8,338.11 is: 11,506.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.53 : 21,268.07 = 8,338.11 : x
  2. Step 2: Convert to fraction form
    15,411.53/21,268.07 = 8,338.11/x
  3. Step 3: Cross multiply
    15,411.53x = 21,268.07 × 8,338.11
  4. Step 4: Simplify right side
    15,411.53x = 177,335,400.81
  5. Step 5: Solve for x
    x = 177,335,400.81/15,411.53
  6. Step 6: Final answer
    x = 11,506.67

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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.