Home / 20,699.58-28,564.59-11,268.15

Finding the Fourth Proportional to 20,699.58, 28,564.59 and 11,268.15

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Solution

The fourth proportional to 20,699.58, 28,564.59 and 11,268.15 is: 15,549.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.58 : 28,564.59 = 11,268.15 : x
  2. Step 2: Convert to fraction form
    20,699.58/28,564.59 = 11,268.15/x
  3. Step 3: Cross multiply
    20,699.58x = 28,564.59 × 11,268.15
  4. Step 4: Simplify right side
    20,699.58x = 321,870,084.81
  5. Step 5: Solve for x
    x = 321,870,084.81/20,699.58
  6. Step 6: Final answer
    x = 15,549.59

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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.