Home / 38,990.76-58,491-12,688.44

Finding the Fourth Proportional to 38,990.76, 58,491 and 12,688.44

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Solution

The fourth proportional to 38,990.76, 58,491 and 12,688.44 is: 19,034.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.76 : 58,491 = 12,688.44 : x
  2. Step 2: Convert to fraction form
    38,990.76/58,491 = 12,688.44/x
  3. Step 3: Cross multiply
    38,990.76x = 58,491 × 12,688.44
  4. Step 4: Simplify right side
    38,990.76x = 742,159,544.04
  5. Step 5: Solve for x
    x = 742,159,544.04/38,990.76
  6. Step 6: Final answer
    x = 19,034.24

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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.