Home / 21,330.26-31,995.40-10,935.38

Finding the Fourth Proportional to 21,330.26, 31,995.40 and 10,935.38

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Solution

The fourth proportional to 21,330.26, 31,995.40 and 10,935.38 is: 16,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.26 : 31,995.40 = 10,935.38 : x
  2. Step 2: Convert to fraction form
    21,330.26/31,995.40 = 10,935.38/x
  3. Step 3: Cross multiply
    21,330.26x = 31,995.40 × 10,935.38
  4. Step 4: Simplify right side
    21,330.26x = 349,881,857.25
  5. Step 5: Solve for x
    x = 349,881,857.25/21,330.26
  6. Step 6: Final answer
    x = 16,403.08

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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.