Home / 21,140.76-31,731.84-17,653.08

Finding the Fourth Proportional to 21,140.76, 31,731.84 and 17,653.08

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Solution

The fourth proportional to 21,140.76, 31,731.84 and 17,653.08 is: 26,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.76 : 31,731.84 = 17,653.08 : x
  2. Step 2: Convert to fraction form
    21,140.76/31,731.84 = 17,653.08/x
  3. Step 3: Cross multiply
    21,140.76x = 31,731.84 × 17,653.08
  4. Step 4: Simplify right side
    21,140.76x = 560,164,710.07
  5. Step 5: Solve for x
    x = 560,164,710.07/21,140.76
  6. Step 6: Final answer
    x = 26,496.91

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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.