Home / 13,756.19-18,983.63-8,091.18

Finding the Fourth Proportional to 13,756.19, 18,983.63 and 8,091.18

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Solution

The fourth proportional to 13,756.19, 18,983.63 and 8,091.18 is: 11,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.19 : 18,983.63 = 8,091.18 : x
  2. Step 2: Convert to fraction form
    13,756.19/18,983.63 = 8,091.18/x
  3. Step 3: Cross multiply
    13,756.19x = 18,983.63 × 8,091.18
  4. Step 4: Simplify right side
    13,756.19x = 153,599,926.93
  5. Step 5: Solve for x
    x = 153,599,926.93/13,756.19
  6. Step 6: Final answer
    x = 11,165.88

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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.