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Finding the Fourth Proportional to 13,658.66, 18,826.29 and 9,674.66

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Solution

The fourth proportional to 13,658.66, 18,826.29 and 9,674.66 is: 13,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.66 : 18,826.29 = 9,674.66 : x
  2. Step 2: Convert to fraction form
    13,658.66/18,826.29 = 9,674.66/x
  3. Step 3: Cross multiply
    13,658.66x = 18,826.29 × 9,674.66
  4. Step 4: Simplify right side
    13,658.66x = 182,137,954.81
  5. Step 5: Solve for x
    x = 182,137,954.81/13,658.66
  6. Step 6: Final answer
    x = 13,334.98

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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.