Home / 13,419.05-20,139.20-7,098.41

Finding the Fourth Proportional to 13,419.05, 20,139.20 and 7,098.41

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Solution

The fourth proportional to 13,419.05, 20,139.20 and 7,098.41 is: 10,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.05 : 20,139.20 = 7,098.41 : x
  2. Step 2: Convert to fraction form
    13,419.05/20,139.20 = 7,098.41/x
  3. Step 3: Cross multiply
    13,419.05x = 20,139.20 × 7,098.41
  4. Step 4: Simplify right side
    13,419.05x = 142,956,162.48
  5. Step 5: Solve for x
    x = 142,956,162.48/13,419.05
  6. Step 6: Final answer
    x = 10,653.23

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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.