Home / 28,893.14-39,873.40-16,145.90

Finding the Fourth Proportional to 28,893.14, 39,873.40 and 16,145.90

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Solution

The fourth proportional to 28,893.14, 39,873.40 and 16,145.90 is: 22,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.14 : 39,873.40 = 16,145.90 : x
  2. Step 2: Convert to fraction form
    28,893.14/39,873.40 = 16,145.90/x
  3. Step 3: Cross multiply
    28,893.14x = 39,873.40 × 16,145.90
  4. Step 4: Simplify right side
    28,893.14x = 643,791,929.06
  5. Step 5: Solve for x
    x = 643,791,929.06/28,893.14
  6. Step 6: Final answer
    x = 22,281.83

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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.