Home / 28,117.65-38,801.18-16,181.40

Finding the Fourth Proportional to 28,117.65, 38,801.18 and 16,181.40

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Solution

The fourth proportional to 28,117.65, 38,801.18 and 16,181.40 is: 22,329.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.65 : 38,801.18 = 16,181.40 : x
  2. Step 2: Convert to fraction form
    28,117.65/38,801.18 = 16,181.40/x
  3. Step 3: Cross multiply
    28,117.65x = 38,801.18 × 16,181.40
  4. Step 4: Simplify right side
    28,117.65x = 627,857,333.15
  5. Step 5: Solve for x
    x = 627,857,333.15/28,117.65
  6. Step 6: Final answer
    x = 22,329.65

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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.