Home / 38,871.93-53,639.40-21,875.79

Finding the Fourth Proportional to 38,871.93, 53,639.40 and 21,875.79

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Solution

The fourth proportional to 38,871.93, 53,639.40 and 21,875.79 is: 30,186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,871.93 : 53,639.40 = 21,875.79 : x
  2. Step 2: Convert to fraction form
    38,871.93/53,639.40 = 21,875.79/x
  3. Step 3: Cross multiply
    38,871.93x = 53,639.40 × 21,875.79
  4. Step 4: Simplify right side
    38,871.93x = 1,173,404,250.13
  5. Step 5: Solve for x
    x = 1,173,404,250.13/38,871.93
  6. Step 6: Final answer
    x = 30,186.42

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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.