Home / 39,867.59-55,019.79-21,962.58

Finding the Fourth Proportional to 39,867.59, 55,019.79 and 21,962.58

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Solution

The fourth proportional to 39,867.59, 55,019.79 and 21,962.58 is: 30,309.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,867.59 : 55,019.79 = 21,962.58 : x
  2. Step 2: Convert to fraction form
    39,867.59/55,019.79 = 21,962.58/x
  3. Step 3: Cross multiply
    39,867.59x = 55,019.79 × 21,962.58
  4. Step 4: Simplify right side
    39,867.59x = 1,208,376,539.46
  5. Step 5: Solve for x
    x = 1,208,376,539.46/39,867.59
  6. Step 6: Final answer
    x = 30,309.75

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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.