Home / 21,603.08-29,812.16-12,042.85

Finding the Fourth Proportional to 21,603.08, 29,812.16 and 12,042.85

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Solution

The fourth proportional to 21,603.08, 29,812.16 and 12,042.85 is: 16,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.08 : 29,812.16 = 12,042.85 : x
  2. Step 2: Convert to fraction form
    21,603.08/29,812.16 = 12,042.85/x
  3. Step 3: Cross multiply
    21,603.08x = 29,812.16 × 12,042.85
  4. Step 4: Simplify right side
    21,603.08x = 359,023,371.06
  5. Step 5: Solve for x
    x = 359,023,371.06/21,603.08
  6. Step 6: Final answer
    x = 16,619.08

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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.