Home / 12,398.32-17,101.19-7,920.08

Finding the Fourth Proportional to 12,398.32, 17,101.19 and 7,920.08

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Solution

The fourth proportional to 12,398.32, 17,101.19 and 7,920.08 is: 10,924.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.32 : 17,101.19 = 7,920.08 : x
  2. Step 2: Convert to fraction form
    12,398.32/17,101.19 = 7,920.08/x
  3. Step 3: Cross multiply
    12,398.32x = 17,101.19 × 7,920.08
  4. Step 4: Simplify right side
    12,398.32x = 135,442,887.51
  5. Step 5: Solve for x
    x = 135,442,887.51/12,398.32
  6. Step 6: Final answer
    x = 10,924.29

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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.