Home / 21,035.12-29,028.42-11,603.72

Finding the Fourth Proportional to 21,035.12, 29,028.42 and 11,603.72

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Solution

The fourth proportional to 21,035.12, 29,028.42 and 11,603.72 is: 16,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.12 : 29,028.42 = 11,603.72 : x
  2. Step 2: Convert to fraction form
    21,035.12/29,028.42 = 11,603.72/x
  3. Step 3: Cross multiply
    21,035.12x = 29,028.42 × 11,603.72
  4. Step 4: Simplify right side
    21,035.12x = 336,837,657.72
  5. Step 5: Solve for x
    x = 336,837,657.72/21,035.12
  6. Step 6: Final answer
    x = 16,013.11

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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.