Home / 10,106.40-13,945.19-5,629.13

Finding the Fourth Proportional to 10,106.40, 13,945.19 and 5,629.13

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Solution

The fourth proportional to 10,106.40, 13,945.19 and 5,629.13 is: 7,767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,106.40 : 13,945.19 = 5,629.13 : x
  2. Step 2: Convert to fraction form
    10,106.40/13,945.19 = 5,629.13/x
  3. Step 3: Cross multiply
    10,106.40x = 13,945.19 × 5,629.13
  4. Step 4: Simplify right side
    10,106.40x = 78,499,189.51
  5. Step 5: Solve for x
    x = 78,499,189.51/10,106.40
  6. Step 6: Final answer
    x = 7,767.28

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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.