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Finding the Fourth Proportional to 18,993.40, 26,205.55 and 10,926.63

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Solution

The fourth proportional to 18,993.40, 26,205.55 and 10,926.63 is: 15,075.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.40 : 26,205.55 = 10,926.63 : x
  2. Step 2: Convert to fraction form
    18,993.40/26,205.55 = 10,926.63/x
  3. Step 3: Cross multiply
    18,993.40x = 26,205.55 × 10,926.63
  4. Step 4: Simplify right side
    18,993.40x = 286,338,348.80
  5. Step 5: Solve for x
    x = 286,338,348.80/18,993.40
  6. Step 6: Final answer
    x = 15,075.68

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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.