Home / 28,354.50-39,129.23-16,418.48

Finding the Fourth Proportional to 28,354.50, 39,129.23 and 16,418.48

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Solution

The fourth proportional to 28,354.50, 39,129.23 and 16,418.48 is: 22,657.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.50 : 39,129.23 = 16,418.48 : x
  2. Step 2: Convert to fraction form
    28,354.50/39,129.23 = 16,418.48/x
  3. Step 3: Cross multiply
    28,354.50x = 39,129.23 × 16,418.48
  4. Step 4: Simplify right side
    28,354.50x = 642,442,325.57
  5. Step 5: Solve for x
    x = 642,442,325.57/28,354.50
  6. Step 6: Final answer
    x = 22,657.51

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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.