Home / 21,555.18-29,716.47-14,747.94

Finding the Fourth Proportional to 21,555.18, 29,716.47 and 14,747.94

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Solution

The fourth proportional to 21,555.18, 29,716.47 and 14,747.94 is: 20,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.18 : 29,716.47 = 14,747.94 : x
  2. Step 2: Convert to fraction form
    21,555.18/29,716.47 = 14,747.94/x
  3. Step 3: Cross multiply
    21,555.18x = 29,716.47 × 14,747.94
  4. Step 4: Simplify right side
    21,555.18x = 438,256,716.57
  5. Step 5: Solve for x
    x = 438,256,716.57/21,555.18
  6. Step 6: Final answer
    x = 20,331.85

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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.