Home / 39,779.19-54,893.75-21,873.12

Finding the Fourth Proportional to 39,779.19, 54,893.75 and 21,873.12

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Solution

The fourth proportional to 39,779.19, 54,893.75 and 21,873.12 is: 30,184.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.19 : 54,893.75 = 21,873.12 : x
  2. Step 2: Convert to fraction form
    39,779.19/54,893.75 = 21,873.12/x
  3. Step 3: Cross multiply
    39,779.19x = 54,893.75 × 21,873.12
  4. Step 4: Simplify right side
    39,779.19x = 1,200,697,471.63
  5. Step 5: Solve for x
    x = 1,200,697,471.63/39,779.19
  6. Step 6: Final answer
    x = 30,184.06

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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.