Home / 21,451.86-29,603.48-12,020.42

Finding the Fourth Proportional to 21,451.86, 29,603.48 and 12,020.42

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Solution

The fourth proportional to 21,451.86, 29,603.48 and 12,020.42 is: 16,588.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.86 : 29,603.48 = 12,020.42 : x
  2. Step 2: Convert to fraction form
    21,451.86/29,603.48 = 12,020.42/x
  3. Step 3: Cross multiply
    21,451.86x = 29,603.48 × 12,020.42
  4. Step 4: Simplify right side
    21,451.86x = 355,846,263.06
  5. Step 5: Solve for x
    x = 355,846,263.06/21,451.86
  6. Step 6: Final answer
    x = 16,588.13

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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.