Home / 39,657.49-54,727.41-21,752.64

Finding the Fourth Proportional to 39,657.49, 54,727.41 and 21,752.64

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Solution

The fourth proportional to 39,657.49, 54,727.41 and 21,752.64 is: 30,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.49 : 54,727.41 = 21,752.64 : x
  2. Step 2: Convert to fraction form
    39,657.49/54,727.41 = 21,752.64/x
  3. Step 3: Cross multiply
    39,657.49x = 54,727.41 × 21,752.64
  4. Step 4: Simplify right side
    39,657.49x = 1,190,465,647.86
  5. Step 5: Solve for x
    x = 1,190,465,647.86/39,657.49
  6. Step 6: Final answer
    x = 30,018.68

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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.