Home / 38,618.11-53,280.60-21,619.85

Finding the Fourth Proportional to 38,618.11, 53,280.60 and 21,619.85

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Solution

The fourth proportional to 38,618.11, 53,280.60 and 21,619.85 is: 29,828.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,618.11 : 53,280.60 = 21,619.85 : x
  2. Step 2: Convert to fraction form
    38,618.11/53,280.60 = 21,619.85/x
  3. Step 3: Cross multiply
    38,618.11x = 53,280.60 × 21,619.85
  4. Step 4: Simplify right side
    38,618.11x = 1,151,918,579.91
  5. Step 5: Solve for x
    x = 1,151,918,579.91/38,618.11
  6. Step 6: Final answer
    x = 29,828.46

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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.