Home / 22,777.12-31,434.48-13,220.56

Finding the Fourth Proportional to 22,777.12, 31,434.48 and 13,220.56

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Solution

The fourth proportional to 22,777.12, 31,434.48 and 13,220.56 is: 18,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,777.12 : 31,434.48 = 13,220.56 : x
  2. Step 2: Convert to fraction form
    22,777.12/31,434.48 = 13,220.56/x
  3. Step 3: Cross multiply
    22,777.12x = 31,434.48 × 13,220.56
  4. Step 4: Simplify right side
    22,777.12x = 415,581,428.91
  5. Step 5: Solve for x
    x = 415,581,428.91/22,777.12
  6. Step 6: Final answer
    x = 18,245.57

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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.