Home / 28,818.66-39,766.89-21,269.07

Finding the Fourth Proportional to 28,818.66, 39,766.89 and 21,269.07

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Solution

The fourth proportional to 28,818.66, 39,766.89 and 21,269.07 is: 29,349.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,818.66 : 39,766.89 = 21,269.07 : x
  2. Step 2: Convert to fraction form
    28,818.66/39,766.89 = 21,269.07/x
  3. Step 3: Cross multiply
    28,818.66x = 39,766.89 × 21,269.07
  4. Step 4: Simplify right side
    28,818.66x = 845,804,767.09
  5. Step 5: Solve for x
    x = 845,804,767.09/28,818.66
  6. Step 6: Final answer
    x = 29,349.21

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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.