Home / 20,058.32-27,680.40-11,105.28

Finding the Fourth Proportional to 20,058.32, 27,680.40 and 11,105.28

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Solution

The fourth proportional to 20,058.32, 27,680.40 and 11,105.28 is: 15,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,058.32 : 27,680.40 = 11,105.28 : x
  2. Step 2: Convert to fraction form
    20,058.32/27,680.40 = 11,105.28/x
  3. Step 3: Cross multiply
    20,058.32x = 27,680.40 × 11,105.28
  4. Step 4: Simplify right side
    20,058.32x = 307,398,592.51
  5. Step 5: Solve for x
    x = 307,398,592.51/20,058.32
  6. Step 6: Final answer
    x = 15,325.25

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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.