Home / 13,824.56-20,700.70-7,571.57

Finding the Fourth Proportional to 13,824.56, 20,700.70 and 7,571.57

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Solution

The fourth proportional to 13,824.56, 20,700.70 and 7,571.57 is: 11,337.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.56 : 20,700.70 = 7,571.57 : x
  2. Step 2: Convert to fraction form
    13,824.56/20,700.70 = 7,571.57/x
  3. Step 3: Cross multiply
    13,824.56x = 20,700.70 × 7,571.57
  4. Step 4: Simplify right side
    13,824.56x = 156,736,657.74
  5. Step 5: Solve for x
    x = 156,736,657.74/13,824.56
  6. Step 6: Final answer
    x = 11,337.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.