Home / 28,779.10-39,710.55-16,201.42

Finding the Fourth Proportional to 28,779.10, 39,710.55 and 16,201.42

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Solution

The fourth proportional to 28,779.10, 39,710.55 and 16,201.42 is: 22,355.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.10 : 39,710.55 = 16,201.42 : x
  2. Step 2: Convert to fraction form
    28,779.10/39,710.55 = 16,201.42/x
  3. Step 3: Cross multiply
    28,779.10x = 39,710.55 × 16,201.42
  4. Step 4: Simplify right side
    28,779.10x = 643,367,298.98
  5. Step 5: Solve for x
    x = 643,367,298.98/28,779.10
  6. Step 6: Final answer
    x = 22,355.37

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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.