Home / 28,929.30-39,921.90-16,354.05

Finding the Fourth Proportional to 28,929.30, 39,921.90 and 16,354.05

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Solution

The fourth proportional to 28,929.30, 39,921.90 and 16,354.05 is: 22,568.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,929.30 : 39,921.90 = 16,354.05 : x
  2. Step 2: Convert to fraction form
    28,929.30/39,921.90 = 16,354.05/x
  3. Step 3: Cross multiply
    28,929.30x = 39,921.90 × 16,354.05
  4. Step 4: Simplify right side
    28,929.30x = 652,884,748.70
  5. Step 5: Solve for x
    x = 652,884,748.70/28,929.30
  6. Step 6: Final answer
    x = 22,568.29

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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.