Home / 28,591.32-39,434.94-19,640.28

Finding the Fourth Proportional to 28,591.32, 39,434.94 and 19,640.28

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Solution

The fourth proportional to 28,591.32, 39,434.94 and 19,640.28 is: 27,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,591.32 : 39,434.94 = 19,640.28 : x
  2. Step 2: Convert to fraction form
    28,591.32/39,434.94 = 19,640.28/x
  3. Step 3: Cross multiply
    28,591.32x = 39,434.94 × 19,640.28
  4. Step 4: Simplify right side
    28,591.32x = 774,513,263.38
  5. Step 5: Solve for x
    x = 774,513,263.38/28,591.32
  6. Step 6: Final answer
    x = 27,089.10

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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.