Home / 13,105.13-19,657.69-5,313.94

Finding the Fourth Proportional to 13,105.13, 19,657.69 and 5,313.94

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Solution

The fourth proportional to 13,105.13, 19,657.69 and 5,313.94 is: 7,970.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.13 : 19,657.69 = 5,313.94 : x
  2. Step 2: Convert to fraction form
    13,105.13/19,657.69 = 5,313.94/x
  3. Step 3: Cross multiply
    13,105.13x = 19,657.69 × 5,313.94
  4. Step 4: Simplify right side
    13,105.13x = 104,459,722.77
  5. Step 5: Solve for x
    x = 104,459,722.77/13,105.13
  6. Step 6: Final answer
    x = 7,970.91

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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.