Home / 38,760.57-53,489.39-21,765.06

Finding the Fourth Proportional to 38,760.57, 53,489.39 and 21,765.06

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Solution

The fourth proportional to 38,760.57, 53,489.39 and 21,765.06 is: 30,035.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,760.57 : 53,489.39 = 21,765.06 : x
  2. Step 2: Convert to fraction form
    38,760.57/53,489.39 = 21,765.06/x
  3. Step 3: Cross multiply
    38,760.57x = 53,489.39 × 21,765.06
  4. Step 4: Simplify right side
    38,760.57x = 1,164,199,673.89
  5. Step 5: Solve for x
    x = 1,164,199,673.89/38,760.57
  6. Step 6: Final answer
    x = 30,035.67

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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.