Home / 15,546.78-21,339.77-13,830.60

Finding the Fourth Proportional to 15,546.78, 21,339.77 and 13,830.60

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Solution

The fourth proportional to 15,546.78, 21,339.77 and 13,830.60 is: 18,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.78 : 21,339.77 = 13,830.60 : x
  2. Step 2: Convert to fraction form
    15,546.78/21,339.77 = 13,830.60/x
  3. Step 3: Cross multiply
    15,546.78x = 21,339.77 × 13,830.60
  4. Step 4: Simplify right side
    15,546.78x = 295,141,753.81
  5. Step 5: Solve for x
    x = 295,141,753.81/15,546.78
  6. Step 6: Final answer
    x = 18,984.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.