Home / 21,191.76-31,804.02-11,339.28

Finding the Fourth Proportional to 21,191.76, 31,804.02 and 11,339.28

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Solution

The fourth proportional to 21,191.76, 31,804.02 and 11,339.28 is: 17,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.76 : 31,804.02 = 11,339.28 : x
  2. Step 2: Convert to fraction form
    21,191.76/31,804.02 = 11,339.28/x
  3. Step 3: Cross multiply
    21,191.76x = 31,804.02 × 11,339.28
  4. Step 4: Simplify right side
    21,191.76x = 360,634,687.91
  5. Step 5: Solve for x
    x = 360,634,687.91/21,191.76
  6. Step 6: Final answer
    x = 17,017.68

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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.