Home / 21,075.33-31,603.68-11,212.27

Finding the Fourth Proportional to 21,075.33, 31,603.68 and 11,212.27

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Solution

The fourth proportional to 21,075.33, 31,603.68 and 11,212.27 is: 16,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.33 : 31,603.68 = 11,212.27 : x
  2. Step 2: Convert to fraction form
    21,075.33/31,603.68 = 11,212.27/x
  3. Step 3: Cross multiply
    21,075.33x = 31,603.68 × 11,212.27
  4. Step 4: Simplify right side
    21,075.33x = 354,348,914.14
  5. Step 5: Solve for x
    x = 354,348,914.14/21,075.33
  6. Step 6: Final answer
    x = 16,813.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.