Home / 15,105.06-20,847.69-8,730.75

Finding the Fourth Proportional to 15,105.06, 20,847.69 and 8,730.75

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Solution

The fourth proportional to 15,105.06, 20,847.69 and 8,730.75 is: 12,050.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.06 : 20,847.69 = 8,730.75 : x
  2. Step 2: Convert to fraction form
    15,105.06/20,847.69 = 8,730.75/x
  3. Step 3: Cross multiply
    15,105.06x = 20,847.69 × 8,730.75
  4. Step 4: Simplify right side
    15,105.06x = 182,015,969.47
  5. Step 5: Solve for x
    x = 182,015,969.47/15,105.06
  6. Step 6: Final answer
    x = 12,050.00

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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.