Home / 39,779.12-54,893.71-21,873.06

Finding the Fourth Proportional to 39,779.12, 54,893.71 and 21,873.06

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Solution

The fourth proportional to 39,779.12, 54,893.71 and 21,873.06 is: 30,184.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.12 : 54,893.71 = 21,873.06 : x
  2. Step 2: Convert to fraction form
    39,779.12/54,893.71 = 21,873.06/x
  3. Step 3: Cross multiply
    39,779.12x = 54,893.71 × 21,873.06
  4. Step 4: Simplify right side
    39,779.12x = 1,200,693,412.45
  5. Step 5: Solve for x
    x = 1,200,693,412.45/39,779.12
  6. Step 6: Final answer
    x = 30,184.01

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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.