Home / 15,293.80-21,100.26-9,708.04

Finding the Fourth Proportional to 15,293.80, 21,100.26 and 9,708.04

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Solution

The fourth proportional to 15,293.80, 21,100.26 and 9,708.04 is: 13,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.80 : 21,100.26 = 9,708.04 : x
  2. Step 2: Convert to fraction form
    15,293.80/21,100.26 = 9,708.04/x
  3. Step 3: Cross multiply
    15,293.80x = 21,100.26 × 9,708.04
  4. Step 4: Simplify right side
    15,293.80x = 204,842,168.09
  5. Step 5: Solve for x
    x = 204,842,168.09/15,293.80
  6. Step 6: Final answer
    x = 13,393.80

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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.