Home / 13,979.02-20,972.16-5,214

Finding the Fourth Proportional to 13,979.02, 20,972.16 and 5,214

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Solution

The fourth proportional to 13,979.02, 20,972.16 and 5,214 is: 7,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.02 : 20,972.16 = 5,214 : x
  2. Step 2: Convert to fraction form
    13,979.02/20,972.16 = 5,214/x
  3. Step 3: Cross multiply
    13,979.02x = 20,972.16 × 5,214
  4. Step 4: Simplify right side
    13,979.02x = 109,348,842.24
  5. Step 5: Solve for x
    x = 109,348,842.24/13,979.02
  6. Step 6: Final answer
    x = 7,822.35

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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.