Home / 38,990.46-53,806.68-21,085.48

Finding the Fourth Proportional to 38,990.46, 53,806.68 and 21,085.48

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Solution

The fourth proportional to 38,990.46, 53,806.68 and 21,085.48 is: 29,097.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.46 : 53,806.68 = 21,085.48 : x
  2. Step 2: Convert to fraction form
    38,990.46/53,806.68 = 21,085.48/x
  3. Step 3: Cross multiply
    38,990.46x = 53,806.68 × 21,085.48
  4. Step 4: Simplify right side
    38,990.46x = 1,134,539,742.26
  5. Step 5: Solve for x
    x = 1,134,539,742.26/38,990.46
  6. Step 6: Final answer
    x = 29,097.88

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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.