Home / 20,363.76-28,075.79-13,180.95

Finding the Fourth Proportional to 20,363.76, 28,075.79 and 13,180.95

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Solution

The fourth proportional to 20,363.76, 28,075.79 and 13,180.95 is: 18,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.76 : 28,075.79 = 13,180.95 : x
  2. Step 2: Convert to fraction form
    20,363.76/28,075.79 = 13,180.95/x
  3. Step 3: Cross multiply
    20,363.76x = 28,075.79 × 13,180.95
  4. Step 4: Simplify right side
    20,363.76x = 370,065,617.15
  5. Step 5: Solve for x
    x = 370,065,617.15/20,363.76
  6. Step 6: Final answer
    x = 18,172.75

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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.