Home / 21,160-31,738.32-10,619.26

Finding the Fourth Proportional to 21,160, 31,738.32 and 10,619.26

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Solution

The fourth proportional to 21,160, 31,738.32 and 10,619.26 is: 15,928.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160 : 31,738.32 = 10,619.26 : x
  2. Step 2: Convert to fraction form
    21,160/31,738.32 = 10,619.26/x
  3. Step 3: Cross multiply
    21,160x = 31,738.32 × 10,619.26
  4. Step 4: Simplify right side
    21,160x = 337,037,472.04
  5. Step 5: Solve for x
    x = 337,037,472.04/21,160
  6. Step 6: Final answer
    x = 15,928.05

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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.