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Finding the Fourth Proportional to 28,276.70, 42,413.70 and 9,554.90

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Solution

The fourth proportional to 28,276.70, 42,413.70 and 9,554.90 is: 14,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.70 : 42,413.70 = 9,554.90 : x
  2. Step 2: Convert to fraction form
    28,276.70/42,413.70 = 9,554.90/x
  3. Step 3: Cross multiply
    28,276.70x = 42,413.70 × 9,554.90
  4. Step 4: Simplify right side
    28,276.70x = 405,258,662.13
  5. Step 5: Solve for x
    x = 405,258,662.13/28,276.70
  6. Step 6: Final answer
    x = 14,331.89

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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.