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Finding the Fourth Proportional to 13,808.10, 19,055.95 and 8,146.18

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Solution

The fourth proportional to 13,808.10, 19,055.95 and 8,146.18 is: 11,242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.10 : 19,055.95 = 8,146.18 : x
  2. Step 2: Convert to fraction form
    13,808.10/19,055.95 = 8,146.18/x
  3. Step 3: Cross multiply
    13,808.10x = 19,055.95 × 8,146.18
  4. Step 4: Simplify right side
    13,808.10x = 155,233,198.77
  5. Step 5: Solve for x
    x = 155,233,198.77/13,808.10
  6. Step 6: Final answer
    x = 11,242.18

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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.