Home / 21,693.12-29,926.80-15,329.04

Finding the Fourth Proportional to 21,693.12, 29,926.80 and 15,329.04

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Solution

The fourth proportional to 21,693.12, 29,926.80 and 15,329.04 is: 21,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.12 : 29,926.80 = 15,329.04 : x
  2. Step 2: Convert to fraction form
    21,693.12/29,926.80 = 15,329.04/x
  3. Step 3: Cross multiply
    21,693.12x = 29,926.80 × 15,329.04
  4. Step 4: Simplify right side
    21,693.12x = 458,749,114.27
  5. Step 5: Solve for x
    x = 458,749,114.27/21,693.12
  6. Step 6: Final answer
    x = 21,147.22

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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.