Home / 21,186.51-31,759.08-10,090.23

Finding the Fourth Proportional to 21,186.51, 31,759.08 and 10,090.23

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Solution

The fourth proportional to 21,186.51, 31,759.08 and 10,090.23 is: 15,125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.51 : 31,759.08 = 10,090.23 : x
  2. Step 2: Convert to fraction form
    21,186.51/31,759.08 = 10,090.23/x
  3. Step 3: Cross multiply
    21,186.51x = 31,759.08 × 10,090.23
  4. Step 4: Simplify right side
    21,186.51x = 320,456,421.79
  5. Step 5: Solve for x
    x = 320,456,421.79/21,186.51
  6. Step 6: Final answer
    x = 15,125.49

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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.