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Finding the Fourth Proportional to 14,507.12, 20,020.32 and 8,133.98

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Solution

The fourth proportional to 14,507.12, 20,020.32 and 8,133.98 is: 11,225.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.12 : 20,020.32 = 8,133.98 : x
  2. Step 2: Convert to fraction form
    14,507.12/20,020.32 = 8,133.98/x
  3. Step 3: Cross multiply
    14,507.12x = 20,020.32 × 8,133.98
  4. Step 4: Simplify right side
    14,507.12x = 162,844,882.47
  5. Step 5: Solve for x
    x = 162,844,882.47/14,507.12
  6. Step 6: Final answer
    x = 11,225.17

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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.