Home / 39,684.61-54,762.96-21,779.26

Finding the Fourth Proportional to 39,684.61, 54,762.96 and 21,779.26

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Solution

The fourth proportional to 39,684.61, 54,762.96 and 21,779.26 is: 30,054.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,684.61 : 54,762.96 = 21,779.26 : x
  2. Step 2: Convert to fraction form
    39,684.61/54,762.96 = 21,779.26/x
  3. Step 3: Cross multiply
    39,684.61x = 54,762.96 × 21,779.26
  4. Step 4: Simplify right side
    39,684.61x = 1,192,696,744.21
  5. Step 5: Solve for x
    x = 1,192,696,744.21/39,684.61
  6. Step 6: Final answer
    x = 30,054.39

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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.