Home / 13,170.08-19,755.13-5,378.89

Finding the Fourth Proportional to 13,170.08, 19,755.13 and 5,378.89

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Solution

The fourth proportional to 13,170.08, 19,755.13 and 5,378.89 is: 8,068.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.08 : 19,755.13 = 5,378.89 : x
  2. Step 2: Convert to fraction form
    13,170.08/19,755.13 = 5,378.89/x
  3. Step 3: Cross multiply
    13,170.08x = 19,755.13 × 5,378.89
  4. Step 4: Simplify right side
    13,170.08x = 106,260,671.21
  5. Step 5: Solve for x
    x = 106,260,671.21/13,170.08
  6. Step 6: Final answer
    x = 8,068.34

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1.5x scale

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.