Home / 22,775.43-31,428.56-13,215.60

Finding the Fourth Proportional to 22,775.43, 31,428.56 and 13,215.60

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Solution

The fourth proportional to 22,775.43, 31,428.56 and 13,215.60 is: 18,236.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,775.43 : 31,428.56 = 13,215.60 : x
  2. Step 2: Convert to fraction form
    22,775.43/31,428.56 = 13,215.60/x
  3. Step 3: Cross multiply
    22,775.43x = 31,428.56 × 13,215.60
  4. Step 4: Simplify right side
    22,775.43x = 415,347,211.46
  5. Step 5: Solve for x
    x = 415,347,211.46/22,775.43
  6. Step 6: Final answer
    x = 18,236.64

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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.