Home / 20,699.14-28,565.37-11,268.10

Finding the Fourth Proportional to 20,699.14, 28,565.37 and 11,268.10

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Solution

The fourth proportional to 20,699.14, 28,565.37 and 11,268.10 is: 15,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.14 : 28,565.37 = 11,268.10 : x
  2. Step 2: Convert to fraction form
    20,699.14/28,565.37 = 11,268.10/x
  3. Step 3: Cross multiply
    20,699.14x = 28,565.37 × 11,268.10
  4. Step 4: Simplify right side
    20,699.14x = 321,877,445.70
  5. Step 5: Solve for x
    x = 321,877,445.70/20,699.14
  6. Step 6: Final answer
    x = 15,550.28

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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.