Home / 38,515.23-53,145.69-21,517.35

Finding the Fourth Proportional to 38,515.23, 53,145.69 and 21,517.35

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Solution

The fourth proportional to 38,515.23, 53,145.69 and 21,517.35 is: 29,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.23 : 53,145.69 = 21,517.35 : x
  2. Step 2: Convert to fraction form
    38,515.23/53,145.69 = 21,517.35/x
  3. Step 3: Cross multiply
    38,515.23x = 53,145.69 × 21,517.35
  4. Step 4: Simplify right side
    38,515.23x = 1,143,554,314.29
  5. Step 5: Solve for x
    x = 1,143,554,314.29/38,515.23
  6. Step 6: Final answer
    x = 29,690.96

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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.