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Finding the Fourth Proportional to 18,995.88, 28,500.06 and 9,133.89

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Solution

The fourth proportional to 18,995.88, 28,500.06 and 9,133.89 is: 13,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,995.88 : 28,500.06 = 9,133.89 : x
  2. Step 2: Convert to fraction form
    18,995.88/28,500.06 = 9,133.89/x
  3. Step 3: Cross multiply
    18,995.88x = 28,500.06 × 9,133.89
  4. Step 4: Simplify right side
    18,995.88x = 260,316,413.03
  5. Step 5: Solve for x
    x = 260,316,413.03/18,995.88
  6. Step 6: Final answer
    x = 13,703.84

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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.