Home / 13,688.08-20,534.88-4,329.55

Finding the Fourth Proportional to 13,688.08, 20,534.88 and 4,329.55

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Solution

The fourth proportional to 13,688.08, 20,534.88 and 4,329.55 is: 6,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.08 : 20,534.88 = 4,329.55 : x
  2. Step 2: Convert to fraction form
    13,688.08/20,534.88 = 4,329.55/x
  3. Step 3: Cross multiply
    13,688.08x = 20,534.88 × 4,329.55
  4. Step 4: Simplify right side
    13,688.08x = 88,906,789.70
  5. Step 5: Solve for x
    x = 88,906,789.70/13,688.08
  6. Step 6: Final answer
    x = 6,495.20

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1.5x scale

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.