Home / 21,758.42-30,032.26-13,381.94

Finding the Fourth Proportional to 21,758.42, 30,032.26 and 13,381.94

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Solution

The fourth proportional to 21,758.42, 30,032.26 and 13,381.94 is: 18,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,758.42 : 30,032.26 = 13,381.94 : x
  2. Step 2: Convert to fraction form
    21,758.42/30,032.26 = 13,381.94/x
  3. Step 3: Cross multiply
    21,758.42x = 30,032.26 × 13,381.94
  4. Step 4: Simplify right side
    21,758.42x = 401,889,901.38
  5. Step 5: Solve for x
    x = 401,889,901.38/21,758.42
  6. Step 6: Final answer
    x = 18,470.55

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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.