Home / 15,400.66-21,252.88-8,686.26

Finding the Fourth Proportional to 15,400.66, 21,252.88 and 8,686.26

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Solution

The fourth proportional to 15,400.66, 21,252.88 and 8,686.26 is: 11,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.66 : 21,252.88 = 8,686.26 : x
  2. Step 2: Convert to fraction form
    15,400.66/21,252.88 = 8,686.26/x
  3. Step 3: Cross multiply
    15,400.66x = 21,252.88 × 8,686.26
  4. Step 4: Simplify right side
    15,400.66x = 184,608,107.55
  5. Step 5: Solve for x
    x = 184,608,107.55/15,400.66
  6. Step 6: Final answer
    x = 11,987.03

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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.