Home / 21,766.23-30,032.15-13,805.55

Finding the Fourth Proportional to 21,766.23, 30,032.15 and 13,805.55

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Solution

The fourth proportional to 21,766.23, 30,032.15 and 13,805.55 is: 19,048.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.23 : 30,032.15 = 13,805.55 : x
  2. Step 2: Convert to fraction form
    21,766.23/30,032.15 = 13,805.55/x
  3. Step 3: Cross multiply
    21,766.23x = 30,032.15 × 13,805.55
  4. Step 4: Simplify right side
    21,766.23x = 414,610,129.24
  5. Step 5: Solve for x
    x = 414,610,129.24/21,766.23
  6. Step 6: Final answer
    x = 19,048.33

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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.