Home / 13,748.26-18,972.48-7,779.88

Finding the Fourth Proportional to 13,748.26, 18,972.48 and 7,779.88

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Solution

The fourth proportional to 13,748.26, 18,972.48 and 7,779.88 is: 10,736.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.26 : 18,972.48 = 7,779.88 : x
  2. Step 2: Convert to fraction form
    13,748.26/18,972.48 = 7,779.88/x
  3. Step 3: Cross multiply
    13,748.26x = 18,972.48 × 7,779.88
  4. Step 4: Simplify right side
    13,748.26x = 147,603,617.70
  5. Step 5: Solve for x
    x = 147,603,617.70/13,748.26
  6. Step 6: Final answer
    x = 10,736.17

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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.