Home / 38,717.72-53,427.22-21,719.60

Finding the Fourth Proportional to 38,717.72, 53,427.22 and 21,719.60

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Solution

The fourth proportional to 38,717.72, 53,427.22 and 21,719.60 is: 29,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,717.72 : 53,427.22 = 21,719.60 : x
  2. Step 2: Convert to fraction form
    38,717.72/53,427.22 = 21,719.60/x
  3. Step 3: Cross multiply
    38,717.72x = 53,427.22 × 21,719.60
  4. Step 4: Simplify right side
    38,717.72x = 1,160,417,847.51
  5. Step 5: Solve for x
    x = 1,160,417,847.51/38,717.72
  6. Step 6: Final answer
    x = 29,971.23

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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.