Home / 21,450.48-29,603.56-12,021.04

Finding the Fourth Proportional to 21,450.48, 29,603.56 and 12,021.04

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Solution

The fourth proportional to 21,450.48, 29,603.56 and 12,021.04 is: 16,590.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.48 : 29,603.56 = 12,021.04 : x
  2. Step 2: Convert to fraction form
    21,450.48/29,603.56 = 12,021.04/x
  3. Step 3: Cross multiply
    21,450.48x = 29,603.56 × 12,021.04
  4. Step 4: Simplify right side
    21,450.48x = 355,865,578.90
  5. Step 5: Solve for x
    x = 355,865,578.90/21,450.48
  6. Step 6: Final answer
    x = 16,590.10

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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.