Home / 13,979.44-20,970.51-5,097.16

Finding the Fourth Proportional to 13,979.44, 20,970.51 and 5,097.16

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Solution

The fourth proportional to 13,979.44, 20,970.51 and 5,097.16 is: 7,646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.44 : 20,970.51 = 5,097.16 : x
  2. Step 2: Convert to fraction form
    13,979.44/20,970.51 = 5,097.16/x
  3. Step 3: Cross multiply
    13,979.44x = 20,970.51 × 5,097.16
  4. Step 4: Simplify right side
    13,979.44x = 106,890,044.75
  5. Step 5: Solve for x
    x = 106,890,044.75/13,979.44
  6. Step 6: Final answer
    x = 7,646.23

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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.