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Finding the Fourth Proportional to 28,329.40, 42,492.30 and 9,609.40

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Solution

The fourth proportional to 28,329.40, 42,492.30 and 9,609.40 is: 14,413.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.40 : 42,492.30 = 9,609.40 : x
  2. Step 2: Convert to fraction form
    28,329.40/42,492.30 = 9,609.40/x
  3. Step 3: Cross multiply
    28,329.40x = 42,492.30 × 9,609.40
  4. Step 4: Simplify right side
    28,329.40x = 408,325,507.62
  5. Step 5: Solve for x
    x = 408,325,507.62/28,329.40
  6. Step 6: Final answer
    x = 14,413.49

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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.