Home / 21,130.24-29,163.12-12,058.54

Finding the Fourth Proportional to 21,130.24, 29,163.12 and 12,058.54

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Solution

The fourth proportional to 21,130.24, 29,163.12 and 12,058.54 is: 16,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.24 : 29,163.12 = 12,058.54 : x
  2. Step 2: Convert to fraction form
    21,130.24/29,163.12 = 12,058.54/x
  3. Step 3: Cross multiply
    21,130.24x = 29,163.12 × 12,058.54
  4. Step 4: Simplify right side
    21,130.24x = 351,664,649.04
  5. Step 5: Solve for x
    x = 351,664,649.04/21,130.24
  6. Step 6: Final answer
    x = 16,642.72

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1.5x scale

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.