Home / 12,938.16-17,813.72-11,755.70

Finding the Fourth Proportional to 12,938.16, 17,813.72 and 11,755.70

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Solution

The fourth proportional to 12,938.16, 17,813.72 and 11,755.70 is: 16,185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.16 : 17,813.72 = 11,755.70 : x
  2. Step 2: Convert to fraction form
    12,938.16/17,813.72 = 11,755.70/x
  3. Step 3: Cross multiply
    12,938.16x = 17,813.72 × 11,755.70
  4. Step 4: Simplify right side
    12,938.16x = 209,412,748.20
  5. Step 5: Solve for x
    x = 209,412,748.20/12,938.16
  6. Step 6: Final answer
    x = 16,185.67

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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.