Home / 21,130.49-29,163.46-12,058.80

Finding the Fourth Proportional to 21,130.49, 29,163.46 and 12,058.80

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Solution

The fourth proportional to 21,130.49, 29,163.46 and 12,058.80 is: 16,643.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.49 : 29,163.46 = 12,058.80 : x
  2. Step 2: Convert to fraction form
    21,130.49/29,163.46 = 12,058.80/x
  3. Step 3: Cross multiply
    21,130.49x = 29,163.46 × 12,058.80
  4. Step 4: Simplify right side
    21,130.49x = 351,676,301.30
  5. Step 5: Solve for x
    x = 351,676,301.30/21,130.49
  6. Step 6: Final answer
    x = 16,643.07

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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.