Home / 13,419.10-20,128.65-13,224.70

Finding the Fourth Proportional to 13,419.10, 20,128.65 and 13,224.70

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Solution

The fourth proportional to 13,419.10, 20,128.65 and 13,224.70 is: 19,837.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.10 : 20,128.65 = 13,224.70 : x
  2. Step 2: Convert to fraction form
    13,419.10/20,128.65 = 13,224.70/x
  3. Step 3: Cross multiply
    13,419.10x = 20,128.65 × 13,224.70
  4. Step 4: Simplify right side
    13,419.10x = 266,195,357.66
  5. Step 5: Solve for x
    x = 266,195,357.66/13,419.10
  6. Step 6: Final answer
    x = 19,837.05

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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.