Home / 19,186.80-28,715.40-17,631.60

Finding the Fourth Proportional to 19,186.80, 28,715.40 and 17,631.60

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Solution

The fourth proportional to 19,186.80, 28,715.40 and 17,631.60 is: 26,387.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,186.80 : 28,715.40 = 17,631.60 : x
  2. Step 2: Convert to fraction form
    19,186.80/28,715.40 = 17,631.60/x
  3. Step 3: Cross multiply
    19,186.80x = 28,715.40 × 17,631.60
  4. Step 4: Simplify right side
    19,186.80x = 506,298,446.64
  5. Step 5: Solve for x
    x = 506,298,446.64/19,186.80
  6. Step 6: Final answer
    x = 26,387.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.