Home / 39,684.15-54,762.41-21,779.46

Finding the Fourth Proportional to 39,684.15, 54,762.41 and 21,779.46

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Solution

The fourth proportional to 39,684.15, 54,762.41 and 21,779.46 is: 30,054.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,684.15 : 54,762.41 = 21,779.46 : x
  2. Step 2: Convert to fraction form
    39,684.15/54,762.41 = 21,779.46/x
  3. Step 3: Cross multiply
    39,684.15x = 54,762.41 × 21,779.46
  4. Step 4: Simplify right side
    39,684.15x = 1,192,695,772.55
  5. Step 5: Solve for x
    x = 1,192,695,772.55/39,684.15
  6. Step 6: Final answer
    x = 30,054.71

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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.