Home / 21,105.95-29,126.19-11,675.93

Finding the Fourth Proportional to 21,105.95, 29,126.19 and 11,675.93

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Solution

The fourth proportional to 21,105.95, 29,126.19 and 11,675.93 is: 16,112.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.95 : 29,126.19 = 11,675.93 : x
  2. Step 2: Convert to fraction form
    21,105.95/29,126.19 = 11,675.93/x
  3. Step 3: Cross multiply
    21,105.95x = 29,126.19 × 11,675.93
  4. Step 4: Simplify right side
    21,105.95x = 340,075,209.98
  5. Step 5: Solve for x
    x = 340,075,209.98/21,105.95
  6. Step 6: Final answer
    x = 16,112.77

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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.