Home / 20,553.69-28,383.68-19,434.19

Finding the Fourth Proportional to 20,553.69, 28,383.68 and 19,434.19

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Solution

The fourth proportional to 20,553.69, 28,383.68 and 19,434.19 is: 26,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.69 : 28,383.68 = 19,434.19 : x
  2. Step 2: Convert to fraction form
    20,553.69/28,383.68 = 19,434.19/x
  3. Step 3: Cross multiply
    20,553.69x = 28,383.68 × 19,434.19
  4. Step 4: Simplify right side
    20,553.69x = 551,613,807.65
  5. Step 5: Solve for x
    x = 551,613,807.65/20,553.69
  6. Step 6: Final answer
    x = 26,837.70

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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.