Home / 20,699.43-28,584.19-13,148.19

Finding the Fourth Proportional to 20,699.43, 28,584.19 and 13,148.19

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Solution

The fourth proportional to 20,699.43, 28,584.19 and 13,148.19 is: 18,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.43 : 28,584.19 = 13,148.19 : x
  2. Step 2: Convert to fraction form
    20,699.43/28,584.19 = 13,148.19/x
  3. Step 3: Cross multiply
    20,699.43x = 28,584.19 × 13,148.19
  4. Step 4: Simplify right side
    20,699.43x = 375,830,303.59
  5. Step 5: Solve for x
    x = 375,830,303.59/20,699.43
  6. Step 6: Final answer
    x = 18,156.56

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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.