Home / 15,076.48-20,806.32-9,781.60

Finding the Fourth Proportional to 15,076.48, 20,806.32 and 9,781.60

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Solution

The fourth proportional to 15,076.48, 20,806.32 and 9,781.60 is: 13,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.48 : 20,806.32 = 9,781.60 : x
  2. Step 2: Convert to fraction form
    15,076.48/20,806.32 = 9,781.60/x
  3. Step 3: Cross multiply
    15,076.48x = 20,806.32 × 9,781.60
  4. Step 4: Simplify right side
    15,076.48x = 203,519,099.71
  5. Step 5: Solve for x
    x = 203,519,099.71/15,076.48
  6. Step 6: Final answer
    x = 13,499.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.