Home / 21,239.64-31,816.26-10,703.16

Finding the Fourth Proportional to 21,239.64, 31,816.26 and 10,703.16

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Solution

The fourth proportional to 21,239.64, 31,816.26 and 10,703.16 is: 16,032.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.64 : 31,816.26 = 10,703.16 : x
  2. Step 2: Convert to fraction form
    21,239.64/31,816.26 = 10,703.16/x
  3. Step 3: Cross multiply
    21,239.64x = 31,816.26 × 10,703.16
  4. Step 4: Simplify right side
    21,239.64x = 340,534,521.38
  5. Step 5: Solve for x
    x = 340,534,521.38/21,239.64
  6. Step 6: Final answer
    x = 16,032.97

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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.