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Finding the Fourth Proportional to 18,703.69, 28,055.50 and 10,907.03

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Solution

The fourth proportional to 18,703.69, 28,055.50 and 10,907.03 is: 16,360.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.69 : 28,055.50 = 10,907.03 : x
  2. Step 2: Convert to fraction form
    18,703.69/28,055.50 = 10,907.03/x
  3. Step 3: Cross multiply
    18,703.69x = 28,055.50 × 10,907.03
  4. Step 4: Simplify right side
    18,703.69x = 306,002,223.04
  5. Step 5: Solve for x
    x = 306,002,223.04/18,703.69
  6. Step 6: Final answer
    x = 16,360.53

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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.