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Finding the Fourth Proportional to 12,472.79, 18,718.71 and 4,582.79

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Solution

The fourth proportional to 12,472.79, 18,718.71 and 4,582.79 is: 6,877.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.79 : 18,718.71 = 4,582.79 : x
  2. Step 2: Convert to fraction form
    12,472.79/18,718.71 = 4,582.79/x
  3. Step 3: Cross multiply
    12,472.79x = 18,718.71 × 4,582.79
  4. Step 4: Simplify right side
    12,472.79x = 85,783,800.49
  5. Step 5: Solve for x
    x = 85,783,800.49/12,472.79
  6. Step 6: Final answer
    x = 6,877.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.