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Finding the Fourth Proportional to 14,603.81, 20,153.66 and 8,938.44

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Solution

The fourth proportional to 14,603.81, 20,153.66 and 8,938.44 is: 12,335.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,603.81 : 20,153.66 = 8,938.44 : x
  2. Step 2: Convert to fraction form
    14,603.81/20,153.66 = 8,938.44/x
  3. Step 3: Cross multiply
    14,603.81x = 20,153.66 × 8,938.44
  4. Step 4: Simplify right side
    14,603.81x = 180,142,236.00
  5. Step 5: Solve for x
    x = 180,142,236.00/14,603.81
  6. Step 6: Final answer
    x = 12,335.29

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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.