Home / 13,114.86-19,680.50-5,323.68

Finding the Fourth Proportional to 13,114.86, 19,680.50 and 5,323.68

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Solution

The fourth proportional to 13,114.86, 19,680.50 and 5,323.68 is: 7,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,114.86 : 19,680.50 = 5,323.68 : x
  2. Step 2: Convert to fraction form
    13,114.86/19,680.50 = 5,323.68/x
  3. Step 3: Cross multiply
    13,114.86x = 19,680.50 × 5,323.68
  4. Step 4: Simplify right side
    13,114.86x = 104,772,684.24
  5. Step 5: Solve for x
    x = 104,772,684.24/13,114.86
  6. Step 6: Final answer
    x = 7,988.85

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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.