Home / 38,619.11-53,281.98-21,620.85

Finding the Fourth Proportional to 38,619.11, 53,281.98 and 21,620.85

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Solution

The fourth proportional to 38,619.11, 53,281.98 and 21,620.85 is: 29,829.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,619.11 : 53,281.98 = 21,620.85 : x
  2. Step 2: Convert to fraction form
    38,619.11/53,281.98 = 21,620.85/x
  3. Step 3: Cross multiply
    38,619.11x = 53,281.98 × 21,620.85
  4. Step 4: Simplify right side
    38,619.11x = 1,152,001,697.28
  5. Step 5: Solve for x
    x = 1,152,001,697.28/38,619.11
  6. Step 6: Final answer
    x = 29,829.84

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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.