Home / 12,086.64-18,135.36-9,309.12

Finding the Fourth Proportional to 12,086.64, 18,135.36 and 9,309.12

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Solution

The fourth proportional to 12,086.64, 18,135.36 and 9,309.12 is: 13,967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.64 : 18,135.36 = 9,309.12 : x
  2. Step 2: Convert to fraction form
    12,086.64/18,135.36 = 9,309.12/x
  3. Step 3: Cross multiply
    12,086.64x = 18,135.36 × 9,309.12
  4. Step 4: Simplify right side
    12,086.64x = 168,824,242.48
  5. Step 5: Solve for x
    x = 168,824,242.48/12,086.64
  6. Step 6: Final answer
    x = 13,967.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.