Home / 13,389.32-20,081.70-3,528.70

Finding the Fourth Proportional to 13,389.32, 20,081.70 and 3,528.70

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Solution

The fourth proportional to 13,389.32, 20,081.70 and 3,528.70 is: 5,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.32 : 20,081.70 = 3,528.70 : x
  2. Step 2: Convert to fraction form
    13,389.32/20,081.70 = 3,528.70/x
  3. Step 3: Cross multiply
    13,389.32x = 20,081.70 × 3,528.70
  4. Step 4: Simplify right side
    13,389.32x = 70,862,244.59
  5. Step 5: Solve for x
    x = 70,862,244.59/13,389.32
  6. Step 6: Final answer
    x = 5,292.44

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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.