Home / 13,688.85-20,531.51-4,329.82

Finding the Fourth Proportional to 13,688.85, 20,531.51 and 4,329.82

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Solution

The fourth proportional to 13,688.85, 20,531.51 and 4,329.82 is: 6,494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.85 : 20,531.51 = 4,329.82 : x
  2. Step 2: Convert to fraction form
    13,688.85/20,531.51 = 4,329.82/x
  3. Step 3: Cross multiply
    13,688.85x = 20,531.51 × 4,329.82
  4. Step 4: Simplify right side
    13,688.85x = 88,897,742.63
  5. Step 5: Solve for x
    x = 88,897,742.63/13,688.85
  6. Step 6: Final answer
    x = 6,494.17

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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.