Home / 13,551.61-20,323.76-3,688.54

Finding the Fourth Proportional to 13,551.61, 20,323.76 and 3,688.54

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Solution

The fourth proportional to 13,551.61, 20,323.76 and 3,688.54 is: 5,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.61 : 20,323.76 = 3,688.54 : x
  2. Step 2: Convert to fraction form
    13,551.61/20,323.76 = 3,688.54/x
  3. Step 3: Cross multiply
    13,551.61x = 20,323.76 × 3,688.54
  4. Step 4: Simplify right side
    13,551.61x = 74,965,001.71
  5. Step 5: Solve for x
    x = 74,965,001.71/13,551.61
  6. Step 6: Final answer
    x = 5,531.82

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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.