Home / 21,799.84-30,075.68-13,299.04

Finding the Fourth Proportional to 21,799.84, 30,075.68 and 13,299.04

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Solution

The fourth proportional to 21,799.84, 30,075.68 and 13,299.04 is: 18,347.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.84 : 30,075.68 = 13,299.04 : x
  2. Step 2: Convert to fraction form
    21,799.84/30,075.68 = 13,299.04/x
  3. Step 3: Cross multiply
    21,799.84x = 30,075.68 × 13,299.04
  4. Step 4: Simplify right side
    21,799.84x = 399,977,671.35
  5. Step 5: Solve for x
    x = 399,977,671.35/21,799.84
  6. Step 6: Final answer
    x = 18,347.73

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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.