Home / 39,779.76-54,896.04-21,875.04

Finding the Fourth Proportional to 39,779.76, 54,896.04 and 21,875.04

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Solution

The fourth proportional to 39,779.76, 54,896.04 and 21,875.04 is: 30,187.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,779.76 : 54,896.04 = 21,875.04 : x
  2. Step 2: Convert to fraction form
    39,779.76/54,896.04 = 21,875.04/x
  3. Step 3: Cross multiply
    39,779.76x = 54,896.04 × 21,875.04
  4. Step 4: Simplify right side
    39,779.76x = 1,200,853,070.84
  5. Step 5: Solve for x
    x = 1,200,853,070.84/39,779.76
  6. Step 6: Final answer
    x = 30,187.54

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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.