Home / 28,815.10-39,765.14-16,239.85

Finding the Fourth Proportional to 28,815.10, 39,765.14 and 16,239.85

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Solution

The fourth proportional to 28,815.10, 39,765.14 and 16,239.85 is: 22,411.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,815.10 : 39,765.14 = 16,239.85 : x
  2. Step 2: Convert to fraction form
    28,815.10/39,765.14 = 16,239.85/x
  3. Step 3: Cross multiply
    28,815.10x = 39,765.14 × 16,239.85
  4. Step 4: Simplify right side
    28,815.10x = 645,779,850.02
  5. Step 5: Solve for x
    x = 645,779,850.02/28,815.10
  6. Step 6: Final answer
    x = 22,411.16

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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.