Home / 12,979.44-19,459.56-5,182.32

Finding the Fourth Proportional to 12,979.44, 19,459.56 and 5,182.32

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Solution

The fourth proportional to 12,979.44, 19,459.56 and 5,182.32 is: 7,769.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.44 : 19,459.56 = 5,182.32 : x
  2. Step 2: Convert to fraction form
    12,979.44/19,459.56 = 5,182.32/x
  3. Step 3: Cross multiply
    12,979.44x = 19,459.56 × 5,182.32
  4. Step 4: Simplify right side
    12,979.44x = 100,845,666.98
  5. Step 5: Solve for x
    x = 100,845,666.98/12,979.44
  6. Step 6: Final answer
    x = 7,769.65

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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.