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Finding the Fourth Proportional to 10,299.99, 15,413.08 and 8,918.10

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Solution

The fourth proportional to 10,299.99, 15,413.08 and 8,918.10 is: 13,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,299.99 : 15,413.08 = 8,918.10 : x
  2. Step 2: Convert to fraction form
    10,299.99/15,413.08 = 8,918.10/x
  3. Step 3: Cross multiply
    10,299.99x = 15,413.08 × 8,918.10
  4. Step 4: Simplify right side
    10,299.99x = 137,455,388.75
  5. Step 5: Solve for x
    x = 137,455,388.75/10,299.99
  6. Step 6: Final answer
    x = 13,345.20

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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.