Home / 21,224.63-31,788.46-10,139.16

Finding the Fourth Proportional to 21,224.63, 31,788.46 and 10,139.16

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Solution

The fourth proportional to 21,224.63, 31,788.46 and 10,139.16 is: 15,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.63 : 31,788.46 = 10,139.16 : x
  2. Step 2: Convert to fraction form
    21,224.63/31,788.46 = 10,139.16/x
  3. Step 3: Cross multiply
    21,224.63x = 31,788.46 × 10,139.16
  4. Step 4: Simplify right side
    21,224.63x = 322,308,282.09
  5. Step 5: Solve for x
    x = 322,308,282.09/21,224.63
  6. Step 6: Final answer
    x = 15,185.58

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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.