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Finding the Fourth Proportional to 13,379.71, 18,476.50 and 8,607.95

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Solution

The fourth proportional to 13,379.71, 18,476.50 and 8,607.95 is: 11,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.71 : 18,476.50 = 8,607.95 : x
  2. Step 2: Convert to fraction form
    13,379.71/18,476.50 = 8,607.95/x
  3. Step 3: Cross multiply
    13,379.71x = 18,476.50 × 8,607.95
  4. Step 4: Simplify right side
    13,379.71x = 159,044,788.18
  5. Step 5: Solve for x
    x = 159,044,788.18/13,379.71
  6. Step 6: Final answer
    x = 11,887.02

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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.