Home / 20,075.47-30,084.35-11,291.83

Finding the Fourth Proportional to 20,075.47, 30,084.35 and 11,291.83

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Solution

The fourth proportional to 20,075.47, 30,084.35 and 11,291.83 is: 16,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.47 : 30,084.35 = 11,291.83 : x
  2. Step 2: Convert to fraction form
    20,075.47/30,084.35 = 11,291.83/x
  3. Step 3: Cross multiply
    20,075.47x = 30,084.35 × 11,291.83
  4. Step 4: Simplify right side
    20,075.47x = 339,707,309.40
  5. Step 5: Solve for x
    x = 339,707,309.40/20,075.47
  6. Step 6: Final answer
    x = 16,921.51

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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.