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Finding the Fourth Proportional to 12,687.39, 19,036.53 and 4,901.67

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Solution

The fourth proportional to 12,687.39, 19,036.53 and 4,901.67 is: 7,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.39 : 19,036.53 = 4,901.67 : x
  2. Step 2: Convert to fraction form
    12,687.39/19,036.53 = 4,901.67/x
  3. Step 3: Cross multiply
    12,687.39x = 19,036.53 × 4,901.67
  4. Step 4: Simplify right side
    12,687.39x = 93,310,788.01
  5. Step 5: Solve for x
    x = 93,310,788.01/12,687.39
  6. Step 6: Final answer
    x = 7,354.61

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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.