Home / 28,320.39-39,102.41-19,841.31

Finding the Fourth Proportional to 28,320.39, 39,102.41 and 19,841.31

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Solution

The fourth proportional to 28,320.39, 39,102.41 and 19,841.31 is: 27,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.39 : 39,102.41 = 19,841.31 : x
  2. Step 2: Convert to fraction form
    28,320.39/39,102.41 = 19,841.31/x
  3. Step 3: Cross multiply
    28,320.39x = 39,102.41 × 19,841.31
  4. Step 4: Simplify right side
    28,320.39x = 775,843,088.16
  5. Step 5: Solve for x
    x = 775,843,088.16/28,320.39
  6. Step 6: Final answer
    x = 27,395.21

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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.