Home / 21,325.14-31,987.70-10,930.26

Finding the Fourth Proportional to 21,325.14, 31,987.70 and 10,930.26

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Solution

The fourth proportional to 21,325.14, 31,987.70 and 10,930.26 is: 16,395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.14 : 31,987.70 = 10,930.26 : x
  2. Step 2: Convert to fraction form
    21,325.14/31,987.70 = 10,930.26/x
  3. Step 3: Cross multiply
    21,325.14x = 31,987.70 × 10,930.26
  4. Step 4: Simplify right side
    21,325.14x = 349,633,745.19
  5. Step 5: Solve for x
    x = 349,633,745.19/21,325.14
  6. Step 6: Final answer
    x = 16,395.38

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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.