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Finding the Fourth Proportional to 16,434.40, 22,679.76 and 9,360.40

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Solution

The fourth proportional to 16,434.40, 22,679.76 and 9,360.40 is: 12,917.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,434.40 : 22,679.76 = 9,360.40 : x
  2. Step 2: Convert to fraction form
    16,434.40/22,679.76 = 9,360.40/x
  3. Step 3: Cross multiply
    16,434.40x = 22,679.76 × 9,360.40
  4. Step 4: Simplify right side
    16,434.40x = 212,291,625.50
  5. Step 5: Solve for x
    x = 212,291,625.50/16,434.40
  6. Step 6: Final answer
    x = 12,917.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.