Home / 21,165.99-29,203.16-16,675.80

Finding the Fourth Proportional to 21,165.99, 29,203.16 and 16,675.80

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Solution

The fourth proportional to 21,165.99, 29,203.16 and 16,675.80 is: 23,007.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.99 : 29,203.16 = 16,675.80 : x
  2. Step 2: Convert to fraction form
    21,165.99/29,203.16 = 16,675.80/x
  3. Step 3: Cross multiply
    21,165.99x = 29,203.16 × 16,675.80
  4. Step 4: Simplify right side
    21,165.99x = 486,985,972.15
  5. Step 5: Solve for x
    x = 486,985,972.15/21,165.99
  6. Step 6: Final answer
    x = 23,007.95

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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.