Home / 15,100.50-20,838.69-8,812.92

Finding the Fourth Proportional to 15,100.50, 20,838.69 and 8,812.92

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Solution

The fourth proportional to 15,100.50, 20,838.69 and 8,812.92 is: 12,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.50 : 20,838.69 = 8,812.92 : x
  2. Step 2: Convert to fraction form
    15,100.50/20,838.69 = 8,812.92/x
  3. Step 3: Cross multiply
    15,100.50x = 20,838.69 × 8,812.92
  4. Step 4: Simplify right side
    15,100.50x = 183,649,707.87
  5. Step 5: Solve for x
    x = 183,649,707.87/15,100.50
  6. Step 6: Final answer
    x = 12,161.83

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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.