Home / 28,326.33-39,089.43-15,579.42

Finding the Fourth Proportional to 28,326.33, 39,089.43 and 15,579.42

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Solution

The fourth proportional to 28,326.33, 39,089.43 and 15,579.42 is: 21,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.33 : 39,089.43 = 15,579.42 : x
  2. Step 2: Convert to fraction form
    28,326.33/39,089.43 = 15,579.42/x
  3. Step 3: Cross multiply
    28,326.33x = 39,089.43 × 15,579.42
  4. Step 4: Simplify right side
    28,326.33x = 608,990,647.53
  5. Step 5: Solve for x
    x = 608,990,647.53/28,326.33
  6. Step 6: Final answer
    x = 21,499.10

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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.