Home / 15,104.06-20,830.80-9,727.40

Finding the Fourth Proportional to 15,104.06, 20,830.80 and 9,727.40

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Solution

The fourth proportional to 15,104.06, 20,830.80 and 9,727.40 is: 13,415.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.06 : 20,830.80 = 9,727.40 : x
  2. Step 2: Convert to fraction form
    15,104.06/20,830.80 = 9,727.40/x
  3. Step 3: Cross multiply
    15,104.06x = 20,830.80 × 9,727.40
  4. Step 4: Simplify right side
    15,104.06x = 202,629,523.92
  5. Step 5: Solve for x
    x = 202,629,523.92/15,104.06
  6. Step 6: Final answer
    x = 13,415.57

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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.