Home / 13,319.29-19,954.70-7,755.76

Finding the Fourth Proportional to 13,319.29, 19,954.70 and 7,755.76

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Solution

The fourth proportional to 13,319.29, 19,954.70 and 7,755.76 is: 11,619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.29 : 19,954.70 = 7,755.76 : x
  2. Step 2: Convert to fraction form
    13,319.29/19,954.70 = 7,755.76/x
  3. Step 3: Cross multiply
    13,319.29x = 19,954.70 × 7,755.76
  4. Step 4: Simplify right side
    13,319.29x = 154,763,864.07
  5. Step 5: Solve for x
    x = 154,763,864.07/13,319.29
  6. Step 6: Final answer
    x = 11,619.53

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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.