Home / 15,099.72-20,847.47-9,809.61

Finding the Fourth Proportional to 15,099.72, 20,847.47 and 9,809.61

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Solution

The fourth proportional to 15,099.72, 20,847.47 and 9,809.61 is: 13,543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.72 : 20,847.47 = 9,809.61 : x
  2. Step 2: Convert to fraction form
    15,099.72/20,847.47 = 9,809.61/x
  3. Step 3: Cross multiply
    15,099.72x = 20,847.47 × 9,809.61
  4. Step 4: Simplify right side
    15,099.72x = 204,505,550.19
  5. Step 5: Solve for x
    x = 204,505,550.19/15,099.72
  6. Step 6: Final answer
    x = 13,543.67

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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.