Home / 39,684.24-54,764.10-21,779.46

Finding the Fourth Proportional to 39,684.24, 54,764.10 and 21,779.46

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Solution

The fourth proportional to 39,684.24, 54,764.10 and 21,779.46 is: 30,055.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,684.24 : 54,764.10 = 21,779.46 : x
  2. Step 2: Convert to fraction form
    39,684.24/54,764.10 = 21,779.46/x
  3. Step 3: Cross multiply
    39,684.24x = 54,764.10 × 21,779.46
  4. Step 4: Simplify right side
    39,684.24x = 1,192,732,525.39
  5. Step 5: Solve for x
    x = 1,192,732,525.39/39,684.24
  6. Step 6: Final answer
    x = 30,055.57

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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.