Home / 38,973-53,788.01-21,980.73

Finding the Fourth Proportional to 38,973, 53,788.01 and 21,980.73

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Solution

The fourth proportional to 38,973, 53,788.01 and 21,980.73 is: 30,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,973 : 53,788.01 = 21,980.73 : x
  2. Step 2: Convert to fraction form
    38,973/53,788.01 = 21,980.73/x
  3. Step 3: Cross multiply
    38,973x = 53,788.01 × 21,980.73
  4. Step 4: Simplify right side
    38,973x = 1,182,299,615.14
  5. Step 5: Solve for x
    x = 1,182,299,615.14/38,973
  6. Step 6: Final answer
    x = 30,336.38

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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.