Home / 21,845.73-30,135.71-13,775.00

Finding the Fourth Proportional to 21,845.73, 30,135.71 and 13,775.00

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Solution

The fourth proportional to 21,845.73, 30,135.71 and 13,775.00 is: 19,002.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.73 : 30,135.71 = 13,775.00 : x
  2. Step 2: Convert to fraction form
    21,845.73/30,135.71 = 13,775.00/x
  3. Step 3: Cross multiply
    21,845.73x = 30,135.71 × 13,775.00
  4. Step 4: Simplify right side
    21,845.73x = 415,119,515.03
  5. Step 5: Solve for x
    x = 415,119,515.03/21,845.73
  6. Step 6: Final answer
    x = 19,002.32

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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.