Home / 28,919.08-39,908.05-16,172.11

Finding the Fourth Proportional to 28,919.08, 39,908.05 and 16,172.11

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Solution

The fourth proportional to 28,919.08, 39,908.05 and 16,172.11 is: 22,317.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.08 : 39,908.05 = 16,172.11 : x
  2. Step 2: Convert to fraction form
    28,919.08/39,908.05 = 16,172.11/x
  3. Step 3: Cross multiply
    28,919.08x = 39,908.05 × 16,172.11
  4. Step 4: Simplify right side
    28,919.08x = 645,397,374.49
  5. Step 5: Solve for x
    x = 645,397,374.49/28,919.08
  6. Step 6: Final answer
    x = 22,317.35

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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.