Home / 21,466.67-29,618.39-12,389.81

Finding the Fourth Proportional to 21,466.67, 29,618.39 and 12,389.81

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Solution

The fourth proportional to 21,466.67, 29,618.39 and 12,389.81 is: 17,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,466.67 : 29,618.39 = 12,389.81 : x
  2. Step 2: Convert to fraction form
    21,466.67/29,618.39 = 12,389.81/x
  3. Step 3: Cross multiply
    21,466.67x = 29,618.39 × 12,389.81
  4. Step 4: Simplify right side
    21,466.67x = 366,966,107.49
  5. Step 5: Solve for x
    x = 366,966,107.49/21,466.67
  6. Step 6: Final answer
    x = 17,094.70

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Why These Related Problems?

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