Home / 22,749.75-31,397.90-21,753.45

Finding the Fourth Proportional to 22,749.75, 31,397.90 and 21,753.45

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Solution

The fourth proportional to 22,749.75, 31,397.90 and 21,753.45 is: 30,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,749.75 : 31,397.90 = 21,753.45 : x
  2. Step 2: Convert to fraction form
    22,749.75/31,397.90 = 21,753.45/x
  3. Step 3: Cross multiply
    22,749.75x = 31,397.90 × 21,753.45
  4. Step 4: Simplify right side
    22,749.75x = 683,012,538.99
  5. Step 5: Solve for x
    x = 683,012,538.99/22,749.75
  6. Step 6: Final answer
    x = 30,022.86

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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.