Home / 28,354.19-39,137.38-16,420.46

Finding the Fourth Proportional to 28,354.19, 39,137.38 and 16,420.46

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Solution

The fourth proportional to 28,354.19, 39,137.38 and 16,420.46 is: 22,665.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.19 : 39,137.38 = 16,420.46 : x
  2. Step 2: Convert to fraction form
    28,354.19/39,137.38 = 16,420.46/x
  3. Step 3: Cross multiply
    28,354.19x = 39,137.38 × 16,420.46
  4. Step 4: Simplify right side
    28,354.19x = 642,653,546.06
  5. Step 5: Solve for x
    x = 642,653,546.06/28,354.19
  6. Step 6: Final answer
    x = 22,665.21

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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.