Home / 22,964.41-31,688.70-12,890.55

Finding the Fourth Proportional to 22,964.41, 31,688.70 and 12,890.55

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Solution

The fourth proportional to 22,964.41, 31,688.70 and 12,890.55 is: 17,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,964.41 : 31,688.70 = 12,890.55 : x
  2. Step 2: Convert to fraction form
    22,964.41/31,688.70 = 12,890.55/x
  3. Step 3: Cross multiply
    22,964.41x = 31,688.70 × 12,890.55
  4. Step 4: Simplify right side
    22,964.41x = 408,484,613.34
  5. Step 5: Solve for x
    x = 408,484,613.34/22,964.41
  6. Step 6: Final answer
    x = 17,787.73

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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.