Home / 38,629.12-53,314.86-21,862.12

Finding the Fourth Proportional to 38,629.12, 53,314.86 and 21,862.12

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Solution

The fourth proportional to 38,629.12, 53,314.86 and 21,862.12 is: 30,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,629.12 : 53,314.86 = 21,862.12 : x
  2. Step 2: Convert to fraction form
    38,629.12/53,314.86 = 21,862.12/x
  3. Step 3: Cross multiply
    38,629.12x = 53,314.86 × 21,862.12
  4. Step 4: Simplify right side
    38,629.12x = 1,165,575,867.10
  5. Step 5: Solve for x
    x = 1,165,575,867.10/38,629.12
  6. Step 6: Final answer
    x = 30,173.50

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Similar ratio
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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.