Home / 13,986.03-20,979.32-5,219.19

Finding the Fourth Proportional to 13,986.03, 20,979.32 and 5,219.19

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Solution

The fourth proportional to 13,986.03, 20,979.32 and 5,219.19 is: 7,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.03 : 20,979.32 = 5,219.19 : x
  2. Step 2: Convert to fraction form
    13,986.03/20,979.32 = 5,219.19/x
  3. Step 3: Cross multiply
    13,986.03x = 20,979.32 × 5,219.19
  4. Step 4: Simplify right side
    13,986.03x = 109,495,044.10
  5. Step 5: Solve for x
    x = 109,495,044.10/13,986.03
  6. Step 6: Final answer
    x = 7,828.89

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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.