Home / 39,892.37-55,054.15-21,987.38

Finding the Fourth Proportional to 39,892.37, 55,054.15 and 21,987.38

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Solution

The fourth proportional to 39,892.37, 55,054.15 and 21,987.38 is: 30,344.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,892.37 : 55,054.15 = 21,987.38 : x
  2. Step 2: Convert to fraction form
    39,892.37/55,054.15 = 21,987.38/x
  3. Step 3: Cross multiply
    39,892.37x = 55,054.15 × 21,987.38
  4. Step 4: Simplify right side
    39,892.37x = 1,210,496,599.29
  5. Step 5: Solve for x
    x = 1,210,496,599.29/39,892.37
  6. Step 6: Final answer
    x = 30,344.07

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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.