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Finding the Fourth Proportional to 13,342.84, 18,391.84 and 10,505.72

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Solution

The fourth proportional to 13,342.84, 18,391.84 and 10,505.72 is: 14,481.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.84 : 18,391.84 = 10,505.72 : x
  2. Step 2: Convert to fraction form
    13,342.84/18,391.84 = 10,505.72/x
  3. Step 3: Cross multiply
    13,342.84x = 18,391.84 × 10,505.72
  4. Step 4: Simplify right side
    13,342.84x = 193,219,521.32
  5. Step 5: Solve for x
    x = 193,219,521.32/13,342.84
  6. Step 6: Final answer
    x = 14,481.14

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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.