Home / 10,938.70-16,404-8,603.25

Finding the Fourth Proportional to 10,938.70, 16,404 and 8,603.25

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Solution

The fourth proportional to 10,938.70, 16,404 and 8,603.25 is: 12,901.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.70 : 16,404 = 8,603.25 : x
  2. Step 2: Convert to fraction form
    10,938.70/16,404 = 8,603.25/x
  3. Step 3: Cross multiply
    10,938.70x = 16,404 × 8,603.25
  4. Step 4: Simplify right side
    10,938.70x = 141,127,713
  5. Step 5: Solve for x
    x = 141,127,713/10,938.70
  6. Step 6: Final answer
    x = 12,901.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.