Home / 13,979.16-20,970.90-4,743

Finding the Fourth Proportional to 13,979.16, 20,970.90 and 4,743

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Solution

The fourth proportional to 13,979.16, 20,970.90 and 4,743 is: 7,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.16 : 20,970.90 = 4,743 : x
  2. Step 2: Convert to fraction form
    13,979.16/20,970.90 = 4,743/x
  3. Step 3: Cross multiply
    13,979.16x = 20,970.90 × 4,743
  4. Step 4: Simplify right side
    13,979.16x = 99,464,978.70
  5. Step 5: Solve for x
    x = 99,464,978.70/13,979.16
  6. Step 6: Final answer
    x = 7,115.23

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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.