Home / 21,201.51-29,258.46-11,642.31

Finding the Fourth Proportional to 21,201.51, 29,258.46 and 11,642.31

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Solution

The fourth proportional to 21,201.51, 29,258.46 and 11,642.31 is: 16,066.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.51 : 29,258.46 = 11,642.31 : x
  2. Step 2: Convert to fraction form
    21,201.51/29,258.46 = 11,642.31/x
  3. Step 3: Cross multiply
    21,201.51x = 29,258.46 × 11,642.31
  4. Step 4: Simplify right side
    21,201.51x = 340,636,061.44
  5. Step 5: Solve for x
    x = 340,636,061.44/21,201.51
  6. Step 6: Final answer
    x = 16,066.59

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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.