Home / 13,447.40-20,181.54-9,316.36

Finding the Fourth Proportional to 13,447.40, 20,181.54 and 9,316.36

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Solution

The fourth proportional to 13,447.40, 20,181.54 and 9,316.36 is: 13,981.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.40 : 20,181.54 = 9,316.36 : x
  2. Step 2: Convert to fraction form
    13,447.40/20,181.54 = 9,316.36/x
  3. Step 3: Cross multiply
    13,447.40x = 20,181.54 × 9,316.36
  4. Step 4: Simplify right side
    13,447.40x = 188,018,391.09
  5. Step 5: Solve for x
    x = 188,018,391.09/13,447.40
  6. Step 6: Final answer
    x = 13,981.77

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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.