Home / 13,419.68-20,114.96-5,619.40

Finding the Fourth Proportional to 13,419.68, 20,114.96 and 5,619.40

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Solution

The fourth proportional to 13,419.68, 20,114.96 and 5,619.40 is: 8,423.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.68 : 20,114.96 = 5,619.40 : x
  2. Step 2: Convert to fraction form
    13,419.68/20,114.96 = 5,619.40/x
  3. Step 3: Cross multiply
    13,419.68x = 20,114.96 × 5,619.40
  4. Step 4: Simplify right side
    13,419.68x = 113,034,006.22
  5. Step 5: Solve for x
    x = 113,034,006.22/13,419.68
  6. Step 6: Final answer
    x = 8,423.00

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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.