Home / 21,102.63-31,605.47-10,540.23

Finding the Fourth Proportional to 21,102.63, 31,605.47 and 10,540.23

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Solution

The fourth proportional to 21,102.63, 31,605.47 and 10,540.23 is: 15,786.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.63 : 31,605.47 = 10,540.23 : x
  2. Step 2: Convert to fraction form
    21,102.63/31,605.47 = 10,540.23/x
  3. Step 3: Cross multiply
    21,102.63x = 31,605.47 × 10,540.23
  4. Step 4: Simplify right side
    21,102.63x = 333,128,923.06
  5. Step 5: Solve for x
    x = 333,128,923.06/21,102.63
  6. Step 6: Final answer
    x = 15,786.13

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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.