Home / 28,354.38-39,129.06-16,418.35

Finding the Fourth Proportional to 28,354.38, 39,129.06 and 16,418.35

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Solution

The fourth proportional to 28,354.38, 39,129.06 and 16,418.35 is: 22,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.38 : 39,129.06 = 16,418.35 : x
  2. Step 2: Convert to fraction form
    28,354.38/39,129.06 = 16,418.35/x
  3. Step 3: Cross multiply
    28,354.38x = 39,129.06 × 16,418.35
  4. Step 4: Simplify right side
    28,354.38x = 642,434,602.25
  5. Step 5: Solve for x
    x = 642,434,602.25/28,354.38
  6. Step 6: Final answer
    x = 22,657.33

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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.