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Finding the Fourth Proportional to 12,281.42, 16,948.63 and 7,246.86

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Solution

The fourth proportional to 12,281.42, 16,948.63 and 7,246.86 is: 10,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.42 : 16,948.63 = 7,246.86 : x
  2. Step 2: Convert to fraction form
    12,281.42/16,948.63 = 7,246.86/x
  3. Step 3: Cross multiply
    12,281.42x = 16,948.63 × 7,246.86
  4. Step 4: Simplify right side
    12,281.42x = 122,824,330.68
  5. Step 5: Solve for x
    x = 122,824,330.68/12,281.42
  6. Step 6: Final answer
    x = 10,000.83

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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.