Home / 21,644.84-29,865.98-12,570.62

Finding the Fourth Proportional to 21,644.84, 29,865.98 and 12,570.62

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Solution

The fourth proportional to 21,644.84, 29,865.98 and 12,570.62 is: 17,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.84 : 29,865.98 = 12,570.62 : x
  2. Step 2: Convert to fraction form
    21,644.84/29,865.98 = 12,570.62/x
  3. Step 3: Cross multiply
    21,644.84x = 29,865.98 × 12,570.62
  4. Step 4: Simplify right side
    21,644.84x = 375,433,767.60
  5. Step 5: Solve for x
    x = 375,433,767.60/21,644.84
  6. Step 6: Final answer
    x = 17,345.18

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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.