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Finding the Fourth Proportional to 28,779.90, 43,176.02 and 16,305.90

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Solution

The fourth proportional to 28,779.90, 43,176.02 and 16,305.90 is: 24,462.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.90 : 43,176.02 = 16,305.90 : x
  2. Step 2: Convert to fraction form
    28,779.90/43,176.02 = 16,305.90/x
  3. Step 3: Cross multiply
    28,779.90x = 43,176.02 × 16,305.90
  4. Step 4: Simplify right side
    28,779.90x = 704,023,864.52
  5. Step 5: Solve for x
    x = 704,023,864.52/28,779.90
  6. Step 6: Final answer
    x = 24,462.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.