Home / 21,965.18-30,306.56-13,012.26

Finding the Fourth Proportional to 21,965.18, 30,306.56 and 13,012.26

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Solution

The fourth proportional to 21,965.18, 30,306.56 and 13,012.26 is: 17,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.18 : 30,306.56 = 13,012.26 : x
  2. Step 2: Convert to fraction form
    21,965.18/30,306.56 = 13,012.26/x
  3. Step 3: Cross multiply
    21,965.18x = 30,306.56 × 13,012.26
  4. Step 4: Simplify right side
    21,965.18x = 394,356,838.43
  5. Step 5: Solve for x
    x = 394,356,838.43/21,965.18
  6. Step 6: Final answer
    x = 17,953.73

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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.