Home / 15,015.54-20,722.72-8,727.50

Finding the Fourth Proportional to 15,015.54, 20,722.72 and 8,727.50

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Solution

The fourth proportional to 15,015.54, 20,722.72 and 8,727.50 is: 12,044.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.54 : 20,722.72 = 8,727.50 : x
  2. Step 2: Convert to fraction form
    15,015.54/20,722.72 = 8,727.50/x
  3. Step 3: Cross multiply
    15,015.54x = 20,722.72 × 8,727.50
  4. Step 4: Simplify right side
    15,015.54x = 180,857,538.80
  5. Step 5: Solve for x
    x = 180,857,538.80/15,015.54
  6. Step 6: Final answer
    x = 12,044.69

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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.