Home / 22,960.81-31,685.90-12,889.27

Finding the Fourth Proportional to 22,960.81, 31,685.90 and 12,889.27

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Solution

The fourth proportional to 22,960.81, 31,685.90 and 12,889.27 is: 17,787.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,960.81 : 31,685.90 = 12,889.27 : x
  2. Step 2: Convert to fraction form
    22,960.81/31,685.90 = 12,889.27/x
  3. Step 3: Cross multiply
    22,960.81x = 31,685.90 × 12,889.27
  4. Step 4: Simplify right side
    22,960.81x = 408,408,120.29
  5. Step 5: Solve for x
    x = 408,408,120.29/22,960.81
  6. Step 6: Final answer
    x = 17,787.18

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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.