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Finding the Fourth Proportional to 13,904.17, 19,187.84 and 7,616.55

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Solution

The fourth proportional to 13,904.17, 19,187.84 and 7,616.55 is: 10,510.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904.17 : 19,187.84 = 7,616.55 : x
  2. Step 2: Convert to fraction form
    13,904.17/19,187.84 = 7,616.55/x
  3. Step 3: Cross multiply
    13,904.17x = 19,187.84 × 7,616.55
  4. Step 4: Simplify right side
    13,904.17x = 146,145,142.75
  5. Step 5: Solve for x
    x = 146,145,142.75/13,904.17
  6. Step 6: Final answer
    x = 10,510.89

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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.