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Finding the Fourth Proportional to 34,386.60, 51,632.70 and 18,834.60

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Solution

The fourth proportional to 34,386.60, 51,632.70 and 18,834.60 is: 28,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,386.60 : 51,632.70 = 18,834.60 : x
  2. Step 2: Convert to fraction form
    34,386.60/51,632.70 = 18,834.60/x
  3. Step 3: Cross multiply
    34,386.60x = 51,632.70 × 18,834.60
  4. Step 4: Simplify right side
    34,386.60x = 972,481,251.42
  5. Step 5: Solve for x
    x = 972,481,251.42/34,386.60
  6. Step 6: Final answer
    x = 28,280.82

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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.