Home / 18,823.42-25,981.05-12,783.89

Finding the Fourth Proportional to 18,823.42, 25,981.05 and 12,783.89

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Solution

The fourth proportional to 18,823.42, 25,981.05 and 12,783.89 is: 17,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,823.42 : 25,981.05 = 12,783.89 : x
  2. Step 2: Convert to fraction form
    18,823.42/25,981.05 = 12,783.89/x
  3. Step 3: Cross multiply
    18,823.42x = 25,981.05 × 12,783.89
  4. Step 4: Simplify right side
    18,823.42x = 332,138,691.46
  5. Step 5: Solve for x
    x = 332,138,691.46/18,823.42
  6. Step 6: Final answer
    x = 17,644.97

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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.