Home / 13,862.60-20,795.63-5,428.02

Finding the Fourth Proportional to 13,862.60, 20,795.63 and 5,428.02

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Solution

The fourth proportional to 13,862.60, 20,795.63 and 5,428.02 is: 8,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.60 : 20,795.63 = 5,428.02 : x
  2. Step 2: Convert to fraction form
    13,862.60/20,795.63 = 5,428.02/x
  3. Step 3: Cross multiply
    13,862.60x = 20,795.63 × 5,428.02
  4. Step 4: Simplify right side
    13,862.60x = 112,879,095.55
  5. Step 5: Solve for x
    x = 112,879,095.55/13,862.60
  6. Step 6: Final answer
    x = 8,142.71

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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.