Home / 38,610.20-53,287.10-21,620.91

Finding the Fourth Proportional to 38,610.20, 53,287.10 and 21,620.91

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Solution

The fourth proportional to 38,610.20, 53,287.10 and 21,620.91 is: 29,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,610.20 : 53,287.10 = 21,620.91 : x
  2. Step 2: Convert to fraction form
    38,610.20/53,287.10 = 21,620.91/x
  3. Step 3: Cross multiply
    38,610.20x = 53,287.10 × 21,620.91
  4. Step 4: Simplify right side
    38,610.20x = 1,152,115,485.16
  5. Step 5: Solve for x
    x = 1,152,115,485.16/38,610.20
  6. Step 6: Final answer
    x = 29,839.67

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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.