Home / 15,107.13-20,847.85-8,392.50

Finding the Fourth Proportional to 15,107.13, 20,847.85 and 8,392.50

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Solution

The fourth proportional to 15,107.13, 20,847.85 and 8,392.50 is: 11,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.13 : 20,847.85 = 8,392.50 : x
  2. Step 2: Convert to fraction form
    15,107.13/20,847.85 = 8,392.50/x
  3. Step 3: Cross multiply
    15,107.13x = 20,847.85 × 8,392.50
  4. Step 4: Simplify right side
    15,107.13x = 174,965,560.14
  5. Step 5: Solve for x
    x = 174,965,560.14/15,107.13
  6. Step 6: Final answer
    x = 11,581.65

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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.