Home / 13,728.32-18,935.06-8,693.36

Finding the Fourth Proportional to 13,728.32, 18,935.06 and 8,693.36

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Solution

The fourth proportional to 13,728.32, 18,935.06 and 8,693.36 is: 11,990.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.32 : 18,935.06 = 8,693.36 : x
  2. Step 2: Convert to fraction form
    13,728.32/18,935.06 = 8,693.36/x
  3. Step 3: Cross multiply
    13,728.32x = 18,935.06 × 8,693.36
  4. Step 4: Simplify right side
    13,728.32x = 164,609,293.20
  5. Step 5: Solve for x
    x = 164,609,293.20/13,728.32
  6. Step 6: Final answer
    x = 11,990.49

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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.