Home / 39,779.62-54,894.40-21,873.56

Finding the Fourth Proportional to 39,779.62, 54,894.40 and 21,873.56

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Solution

The fourth proportional to 39,779.62, 54,894.40 and 21,873.56 is: 30,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.62 : 54,894.40 = 21,873.56 : x
  2. Step 2: Convert to fraction form
    39,779.62/54,894.40 = 21,873.56/x
  3. Step 3: Cross multiply
    39,779.62x = 54,894.40 × 21,873.56
  4. Step 4: Simplify right side
    39,779.62x = 1,200,735,952.06
  5. Step 5: Solve for x
    x = 1,200,735,952.06/39,779.62
  6. Step 6: Final answer
    x = 30,184.70

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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.