Home / 28,401.64-39,180.31-18,326.25

Finding the Fourth Proportional to 28,401.64, 39,180.31 and 18,326.25

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Solution

The fourth proportional to 28,401.64, 39,180.31 and 18,326.25 is: 25,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,401.64 : 39,180.31 = 18,326.25 : x
  2. Step 2: Convert to fraction form
    28,401.64/39,180.31 = 18,326.25/x
  3. Step 3: Cross multiply
    28,401.64x = 39,180.31 × 18,326.25
  4. Step 4: Simplify right side
    28,401.64x = 718,028,110.32
  5. Step 5: Solve for x
    x = 718,028,110.32/28,401.64
  6. Step 6: Final answer
    x = 25,281.22

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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.