Home / 28,278.90-39,023.37-16,948.85

Finding the Fourth Proportional to 28,278.90, 39,023.37 and 16,948.85

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Solution

The fourth proportional to 28,278.90, 39,023.37 and 16,948.85 is: 23,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.90 : 39,023.37 = 16,948.85 : x
  2. Step 2: Convert to fraction form
    28,278.90/39,023.37 = 16,948.85/x
  3. Step 3: Cross multiply
    28,278.90x = 39,023.37 × 16,948.85
  4. Step 4: Simplify right side
    28,278.90x = 661,401,049.51
  5. Step 5: Solve for x
    x = 661,401,049.51/28,278.90
  6. Step 6: Final answer
    x = 23,388.50

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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.