Home / 20,699.93-28,584.88-13,148.69

Finding the Fourth Proportional to 20,699.93, 28,584.88 and 13,148.69

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Solution

The fourth proportional to 20,699.93, 28,584.88 and 13,148.69 is: 18,157.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.93 : 28,584.88 = 13,148.69 : x
  2. Step 2: Convert to fraction form
    20,699.93/28,584.88 = 13,148.69/x
  3. Step 3: Cross multiply
    20,699.93x = 28,584.88 × 13,148.69
  4. Step 4: Simplify right side
    20,699.93x = 375,853,660.06
  5. Step 5: Solve for x
    x = 375,853,660.06/20,699.93
  6. Step 6: Final answer
    x = 18,157.25

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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.