Home / 28,891.15-39,869.29-16,144.54

Finding the Fourth Proportional to 28,891.15, 39,869.29 and 16,144.54

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Solution

The fourth proportional to 28,891.15, 39,869.29 and 16,144.54 is: 22,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,891.15 : 39,869.29 = 16,144.54 : x
  2. Step 2: Convert to fraction form
    28,891.15/39,869.29 = 16,144.54/x
  3. Step 3: Cross multiply
    28,891.15x = 39,869.29 × 16,144.54
  4. Step 4: Simplify right side
    28,891.15x = 643,671,347.18
  5. Step 5: Solve for x
    x = 643,671,347.18/28,891.15
  6. Step 6: Final answer
    x = 22,279.19

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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.