Home / 39,684.08-54,765.60-21,779.73

Finding the Fourth Proportional to 39,684.08, 54,765.60 and 21,779.73

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Solution

The fourth proportional to 39,684.08, 54,765.60 and 21,779.73 is: 30,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,684.08 : 54,765.60 = 21,779.73 : x
  2. Step 2: Convert to fraction form
    39,684.08/54,765.60 = 21,779.73/x
  3. Step 3: Cross multiply
    39,684.08x = 54,765.60 × 21,779.73
  4. Step 4: Simplify right side
    39,684.08x = 1,192,779,981.29
  5. Step 5: Solve for x
    x = 1,192,779,981.29/39,684.08
  6. Step 6: Final answer
    x = 30,056.89

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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.