Home / 13,991.12-19,307.18-8,018.64

Finding the Fourth Proportional to 13,991.12, 19,307.18 and 8,018.64

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Solution

The fourth proportional to 13,991.12, 19,307.18 and 8,018.64 is: 11,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.12 : 19,307.18 = 8,018.64 : x
  2. Step 2: Convert to fraction form
    13,991.12/19,307.18 = 8,018.64/x
  3. Step 3: Cross multiply
    13,991.12x = 19,307.18 × 8,018.64
  4. Step 4: Simplify right side
    13,991.12x = 154,817,325.84
  5. Step 5: Solve for x
    x = 154,817,325.84/13,991.12
  6. Step 6: Final answer
    x = 11,065.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.