Home / 21,070.75-29,075.07-11,639.38

Finding the Fourth Proportional to 21,070.75, 29,075.07 and 11,639.38

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Solution

The fourth proportional to 21,070.75, 29,075.07 and 11,639.38 is: 16,060.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.75 : 29,075.07 = 11,639.38 : x
  2. Step 2: Convert to fraction form
    21,070.75/29,075.07 = 11,639.38/x
  3. Step 3: Cross multiply
    21,070.75x = 29,075.07 × 11,639.38
  4. Step 4: Simplify right side
    21,070.75x = 338,415,788.26
  5. Step 5: Solve for x
    x = 338,415,788.26/21,070.75
  6. Step 6: Final answer
    x = 16,060.93

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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.