Home / 21,291.51-31,923.53-10,197.93

Finding the Fourth Proportional to 21,291.51, 31,923.53 and 10,197.93

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Solution

The fourth proportional to 21,291.51, 31,923.53 and 10,197.93 is: 15,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.51 : 31,923.53 = 10,197.93 : x
  2. Step 2: Convert to fraction form
    21,291.51/31,923.53 = 10,197.93/x
  3. Step 3: Cross multiply
    21,291.51x = 31,923.53 × 10,197.93
  4. Step 4: Simplify right side
    21,291.51x = 325,553,873.30
  5. Step 5: Solve for x
    x = 325,553,873.30/21,291.51
  6. Step 6: Final answer
    x = 15,290.31

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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.