Home / 21,284.64-31,897.36-10,874.40

Finding the Fourth Proportional to 21,284.64, 31,897.36 and 10,874.40

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Solution

The fourth proportional to 21,284.64, 31,897.36 and 10,874.40 is: 16,296.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.64 : 31,897.36 = 10,874.40 : x
  2. Step 2: Convert to fraction form
    21,284.64/31,897.36 = 10,874.40/x
  3. Step 3: Cross multiply
    21,284.64x = 31,897.36 × 10,874.40
  4. Step 4: Simplify right side
    21,284.64x = 346,864,651.58
  5. Step 5: Solve for x
    x = 346,864,651.58/21,284.64
  6. Step 6: Final answer
    x = 16,296.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.