Home / 38,459.20-57,656.40-19,991.20

Finding the Fourth Proportional to 38,459.20, 57,656.40 and 19,991.20

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Solution

The fourth proportional to 38,459.20, 57,656.40 and 19,991.20 is: 29,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,459.20 : 57,656.40 = 19,991.20 : x
  2. Step 2: Convert to fraction form
    38,459.20/57,656.40 = 19,991.20/x
  3. Step 3: Cross multiply
    38,459.20x = 57,656.40 × 19,991.20
  4. Step 4: Simplify right side
    38,459.20x = 1,152,620,623.68
  5. Step 5: Solve for x
    x = 1,152,620,623.68/38,459.20
  6. Step 6: Final answer
    x = 29,969.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.