Home / 28,456.68-39,206.14-19,834.77

Finding the Fourth Proportional to 28,456.68, 39,206.14 and 19,834.77

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Solution

The fourth proportional to 28,456.68, 39,206.14 and 19,834.77 is: 27,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.68 : 39,206.14 = 19,834.77 : x
  2. Step 2: Convert to fraction form
    28,456.68/39,206.14 = 19,834.77/x
  3. Step 3: Cross multiply
    28,456.68x = 39,206.14 × 19,834.77
  4. Step 4: Simplify right side
    28,456.68x = 777,644,978.49
  5. Step 5: Solve for x
    x = 777,644,978.49/28,456.68
  6. Step 6: Final answer
    x = 27,327.32

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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.