Home / 13,688.16-20,546.08-9,245.36

Finding the Fourth Proportional to 13,688.16, 20,546.08 and 9,245.36

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Solution

The fourth proportional to 13,688.16, 20,546.08 and 9,245.36 is: 13,877.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.16 : 20,546.08 = 9,245.36 : x
  2. Step 2: Convert to fraction form
    13,688.16/20,546.08 = 9,245.36/x
  3. Step 3: Cross multiply
    13,688.16x = 20,546.08 × 9,245.36
  4. Step 4: Simplify right side
    13,688.16x = 189,955,906.19
  5. Step 5: Solve for x
    x = 189,955,906.19/13,688.16
  6. Step 6: Final answer
    x = 13,877.39

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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.