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Finding the Fourth Proportional to 14,775.54, 20,389.48 and 8,061.12

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Solution

The fourth proportional to 14,775.54, 20,389.48 and 8,061.12 is: 11,123.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.54 : 20,389.48 = 8,061.12 : x
  2. Step 2: Convert to fraction form
    14,775.54/20,389.48 = 8,061.12/x
  3. Step 3: Cross multiply
    14,775.54x = 20,389.48 × 8,061.12
  4. Step 4: Simplify right side
    14,775.54x = 164,362,045.02
  5. Step 5: Solve for x
    x = 164,362,045.02/14,775.54
  6. Step 6: Final answer
    x = 11,123.93

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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.