Home / 21,220.39-29,284.91-12,270.70

Finding the Fourth Proportional to 21,220.39, 29,284.91 and 12,270.70

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Solution

The fourth proportional to 21,220.39, 29,284.91 and 12,270.70 is: 16,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.39 : 29,284.91 = 12,270.70 : x
  2. Step 2: Convert to fraction form
    21,220.39/29,284.91 = 12,270.70/x
  3. Step 3: Cross multiply
    21,220.39x = 29,284.91 × 12,270.70
  4. Step 4: Simplify right side
    21,220.39x = 359,346,345.14
  5. Step 5: Solve for x
    x = 359,346,345.14/21,220.39
  6. Step 6: Final answer
    x = 16,934.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.