Home / 21,219.64-31,836.37-10,124.89

Finding the Fourth Proportional to 21,219.64, 31,836.37 and 10,124.89

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Solution

The fourth proportional to 21,219.64, 31,836.37 and 10,124.89 is: 15,190.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.64 : 31,836.37 = 10,124.89 : x
  2. Step 2: Convert to fraction form
    21,219.64/31,836.37 = 10,124.89/x
  3. Step 3: Cross multiply
    21,219.64x = 31,836.37 × 10,124.89
  4. Step 4: Simplify right side
    21,219.64x = 322,339,744.25
  5. Step 5: Solve for x
    x = 322,339,744.25/21,219.64
  6. Step 6: Final answer
    x = 15,190.63

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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.