Home / 14,268.15-19,689.48-7,980.39

Finding the Fourth Proportional to 14,268.15, 19,689.48 and 7,980.39

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Solution

The fourth proportional to 14,268.15, 19,689.48 and 7,980.39 is: 11,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.15 : 19,689.48 = 7,980.39 : x
  2. Step 2: Convert to fraction form
    14,268.15/19,689.48 = 7,980.39/x
  3. Step 3: Cross multiply
    14,268.15x = 19,689.48 × 7,980.39
  4. Step 4: Simplify right side
    14,268.15x = 157,129,729.30
  5. Step 5: Solve for x
    x = 157,129,729.30/14,268.15
  6. Step 6: Final answer
    x = 11,012.62

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.