Home / 10,101.21-13,939.80-5,625.25

Finding the Fourth Proportional to 10,101.21, 13,939.80 and 5,625.25

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Solution

The fourth proportional to 10,101.21, 13,939.80 and 5,625.25 is: 7,762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.21 : 13,939.80 = 5,625.25 : x
  2. Step 2: Convert to fraction form
    10,101.21/13,939.80 = 5,625.25/x
  3. Step 3: Cross multiply
    10,101.21x = 13,939.80 × 5,625.25
  4. Step 4: Simplify right side
    10,101.21x = 78,414,804.01
  5. Step 5: Solve for x
    x = 78,414,804.01/10,101.21
  6. Step 6: Final answer
    x = 7,762.91

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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.