Home / 38,506.60-57,716.70-19,779.40

Finding the Fourth Proportional to 38,506.60, 57,716.70 and 19,779.40

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Solution

The fourth proportional to 38,506.60, 57,716.70 and 19,779.40 is: 29,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,506.60 : 57,716.70 = 19,779.40 : x
  2. Step 2: Convert to fraction form
    38,506.60/57,716.70 = 19,779.40/x
  3. Step 3: Cross multiply
    38,506.60x = 57,716.70 × 19,779.40
  4. Step 4: Simplify right side
    38,506.60x = 1,141,601,695.98
  5. Step 5: Solve for x
    x = 1,141,601,695.98/38,506.60
  6. Step 6: Final answer
    x = 29,646.91

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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.