Home / 18,897.06-28,344.78-7,800.60

Finding the Fourth Proportional to 18,897.06, 28,344.78 and 7,800.60

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Solution

The fourth proportional to 18,897.06, 28,344.78 and 7,800.60 is: 11,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.06 : 28,344.78 = 7,800.60 : x
  2. Step 2: Convert to fraction form
    18,897.06/28,344.78 = 7,800.60/x
  3. Step 3: Cross multiply
    18,897.06x = 28,344.78 × 7,800.60
  4. Step 4: Simplify right side
    18,897.06x = 221,106,290.87
  5. Step 5: Solve for x
    x = 221,106,290.87/18,897.06
  6. Step 6: Final answer
    x = 11,700.57

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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.