Home / 15,122.11-20,854.56-9,455.05

Finding the Fourth Proportional to 15,122.11, 20,854.56 and 9,455.05

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Solution

The fourth proportional to 15,122.11, 20,854.56 and 9,455.05 is: 13,039.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.11 : 20,854.56 = 9,455.05 : x
  2. Step 2: Convert to fraction form
    15,122.11/20,854.56 = 9,455.05/x
  3. Step 3: Cross multiply
    15,122.11x = 20,854.56 × 9,455.05
  4. Step 4: Simplify right side
    15,122.11x = 197,180,907.53
  5. Step 5: Solve for x
    x = 197,180,907.53/15,122.11
  6. Step 6: Final answer
    x = 13,039.25

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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.