Home / 28,834.06-39,731.95-21,268.40

Finding the Fourth Proportional to 28,834.06, 39,731.95 and 21,268.40

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Solution

The fourth proportional to 28,834.06, 39,731.95 and 21,268.40 is: 29,306.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,834.06 : 39,731.95 = 21,268.40 : x
  2. Step 2: Convert to fraction form
    28,834.06/39,731.95 = 21,268.40/x
  3. Step 3: Cross multiply
    28,834.06x = 39,731.95 × 21,268.40
  4. Step 4: Simplify right side
    28,834.06x = 845,035,005.38
  5. Step 5: Solve for x
    x = 845,035,005.38/28,834.06
  6. Step 6: Final answer
    x = 29,306.83

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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.