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Finding the Fourth Proportional to 13,655.76, 18,846.36 and 8,354.10

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Solution

The fourth proportional to 13,655.76, 18,846.36 and 8,354.10 is: 11,529.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.76 : 18,846.36 = 8,354.10 : x
  2. Step 2: Convert to fraction form
    13,655.76/18,846.36 = 8,354.10/x
  3. Step 3: Cross multiply
    13,655.76x = 18,846.36 × 8,354.10
  4. Step 4: Simplify right side
    13,655.76x = 157,444,376.08
  5. Step 5: Solve for x
    x = 157,444,376.08/13,655.76
  6. Step 6: Final answer
    x = 11,529.52

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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.