Home / 13,568.76-20,359.32-6,991.56

Finding the Fourth Proportional to 13,568.76, 20,359.32 and 6,991.56

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Solution

The fourth proportional to 13,568.76, 20,359.32 and 6,991.56 is: 10,490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.76 : 20,359.32 = 6,991.56 : x
  2. Step 2: Convert to fraction form
    13,568.76/20,359.32 = 6,991.56/x
  3. Step 3: Cross multiply
    13,568.76x = 20,359.32 × 6,991.56
  4. Step 4: Simplify right side
    13,568.76x = 142,343,407.34
  5. Step 5: Solve for x
    x = 142,343,407.34/13,568.76
  6. Step 6: Final answer
    x = 10,490.52

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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.