Home / 21,375.84-32,075.28-20,600.16

Finding the Fourth Proportional to 21,375.84, 32,075.28 and 20,600.16

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Solution

The fourth proportional to 21,375.84, 32,075.28 and 20,600.16 is: 30,911.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.84 : 32,075.28 = 20,600.16 : x
  2. Step 2: Convert to fraction form
    21,375.84/32,075.28 = 20,600.16/x
  3. Step 3: Cross multiply
    21,375.84x = 32,075.28 × 20,600.16
  4. Step 4: Simplify right side
    21,375.84x = 660,755,900.04
  5. Step 5: Solve for x
    x = 660,755,900.04/21,375.84
  6. Step 6: Final answer
    x = 30,911.34

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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.