Home / 38,690.96-53,396.75-21,694.93

Finding the Fourth Proportional to 38,690.96, 53,396.75 and 21,694.93

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Solution

The fourth proportional to 38,690.96, 53,396.75 and 21,694.93 is: 29,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.96 : 53,396.75 = 21,694.93 : x
  2. Step 2: Convert to fraction form
    38,690.96/53,396.75 = 21,694.93/x
  3. Step 3: Cross multiply
    38,690.96x = 53,396.75 × 21,694.93
  4. Step 4: Simplify right side
    38,690.96x = 1,158,438,674.22
  5. Step 5: Solve for x
    x = 1,158,438,674.22/38,690.96
  6. Step 6: Final answer
    x = 29,940.81

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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.