Home / 22,947.93-31,664.39-13,515.21

Finding the Fourth Proportional to 22,947.93, 31,664.39 and 13,515.21

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Solution

The fourth proportional to 22,947.93, 31,664.39 and 13,515.21 is: 18,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,947.93 : 31,664.39 = 13,515.21 : x
  2. Step 2: Convert to fraction form
    22,947.93/31,664.39 = 13,515.21/x
  3. Step 3: Cross multiply
    22,947.93x = 31,664.39 × 13,515.21
  4. Step 4: Simplify right side
    22,947.93x = 427,950,812.80
  5. Step 5: Solve for x
    x = 427,950,812.80/22,947.93
  6. Step 6: Final answer
    x = 18,648.78

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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.