Home / 10,072.40-13,906.68-7,710.32

Finding the Fourth Proportional to 10,072.40, 13,906.68 and 7,710.32

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Solution

The fourth proportional to 10,072.40, 13,906.68 and 7,710.32 is: 10,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.40 : 13,906.68 = 7,710.32 : x
  2. Step 2: Convert to fraction form
    10,072.40/13,906.68 = 7,710.32/x
  3. Step 3: Cross multiply
    10,072.40x = 13,906.68 × 7,710.32
  4. Step 4: Simplify right side
    10,072.40x = 107,224,952.94
  5. Step 5: Solve for x
    x = 107,224,952.94/10,072.40
  6. Step 6: Final answer
    x = 10,645.42

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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.