Home / 13,151.07-19,730.25-7,311.78

Finding the Fourth Proportional to 13,151.07, 19,730.25 and 7,311.78

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Solution

The fourth proportional to 13,151.07, 19,730.25 and 7,311.78 is: 10,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.07 : 19,730.25 = 7,311.78 : x
  2. Step 2: Convert to fraction form
    13,151.07/19,730.25 = 7,311.78/x
  3. Step 3: Cross multiply
    13,151.07x = 19,730.25 × 7,311.78
  4. Step 4: Simplify right side
    13,151.07x = 144,263,247.35
  5. Step 5: Solve for x
    x = 144,263,247.35/13,151.07
  6. Step 6: Final answer
    x = 10,969.70

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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.