Home / 20,854.74-28,779.26-11,907.48

Finding the Fourth Proportional to 20,854.74, 28,779.26 and 11,907.48

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Solution

The fourth proportional to 20,854.74, 28,779.26 and 11,907.48 is: 16,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854.74 : 28,779.26 = 11,907.48 : x
  2. Step 2: Convert to fraction form
    20,854.74/28,779.26 = 11,907.48/x
  3. Step 3: Cross multiply
    20,854.74x = 28,779.26 × 11,907.48
  4. Step 4: Simplify right side
    20,854.74x = 342,688,403.33
  5. Step 5: Solve for x
    x = 342,688,403.33/20,854.74
  6. Step 6: Final answer
    x = 16,432.16

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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.