Home / 28,967.22-39,979.95-21,032.53

Finding the Fourth Proportional to 28,967.22, 39,979.95 and 21,032.53

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Solution

The fourth proportional to 28,967.22, 39,979.95 and 21,032.53 is: 29,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.22 : 39,979.95 = 21,032.53 : x
  2. Step 2: Convert to fraction form
    28,967.22/39,979.95 = 21,032.53/x
  3. Step 3: Cross multiply
    28,967.22x = 39,979.95 × 21,032.53
  4. Step 4: Simplify right side
    28,967.22x = 840,879,318.95
  5. Step 5: Solve for x
    x = 840,879,318.95/28,967.22
  6. Step 6: Final answer
    x = 29,028.65

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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.