Home / 39,657.69-54,725.49-21,753.45

Finding the Fourth Proportional to 39,657.69, 54,725.49 and 21,753.45

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Solution

The fourth proportional to 39,657.69, 54,725.49 and 21,753.45 is: 30,018.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.69 : 54,725.49 = 21,753.45 : x
  2. Step 2: Convert to fraction form
    39,657.69/54,725.49 = 21,753.45/x
  3. Step 3: Cross multiply
    39,657.69x = 54,725.49 × 21,753.45
  4. Step 4: Simplify right side
    39,657.69x = 1,190,468,210.44
  5. Step 5: Solve for x
    x = 1,190,468,210.44/39,657.69
  6. Step 6: Final answer
    x = 30,018.60

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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.