Home / 26,649.20-39,979.48-7,929.30

Finding the Fourth Proportional to 26,649.20, 39,979.48 and 7,929.30

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Solution

The fourth proportional to 26,649.20, 39,979.48 and 7,929.30 is: 11,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,649.20 : 39,979.48 = 7,929.30 : x
  2. Step 2: Convert to fraction form
    26,649.20/39,979.48 = 7,929.30/x
  3. Step 3: Cross multiply
    26,649.20x = 39,979.48 × 7,929.30
  4. Step 4: Simplify right side
    26,649.20x = 317,009,290.76
  5. Step 5: Solve for x
    x = 317,009,290.76/26,649.20
  6. Step 6: Final answer
    x = 11,895.64

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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.