Home / 15,109.34-20,850.77-8,394.84

Finding the Fourth Proportional to 15,109.34, 20,850.77 and 8,394.84

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Solution

The fourth proportional to 15,109.34, 20,850.77 and 8,394.84 is: 11,584.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.34 : 20,850.77 = 8,394.84 : x
  2. Step 2: Convert to fraction form
    15,109.34/20,850.77 = 8,394.84/x
  3. Step 3: Cross multiply
    15,109.34x = 20,850.77 × 8,394.84
  4. Step 4: Simplify right side
    15,109.34x = 175,038,851.79
  5. Step 5: Solve for x
    x = 175,038,851.79/15,109.34
  6. Step 6: Final answer
    x = 11,584.82

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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.