Home / 30,009.36-45,006.12-8,943.72

Finding the Fourth Proportional to 30,009.36, 45,006.12 and 8,943.72

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Solution

The fourth proportional to 30,009.36, 45,006.12 and 8,943.72 is: 13,413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,009.36 : 45,006.12 = 8,943.72 : x
  2. Step 2: Convert to fraction form
    30,009.36/45,006.12 = 8,943.72/x
  3. Step 3: Cross multiply
    30,009.36x = 45,006.12 × 8,943.72
  4. Step 4: Simplify right side
    30,009.36x = 402,522,135.57
  5. Step 5: Solve for x
    x = 402,522,135.57/30,009.36
  6. Step 6: Final answer
    x = 13,413.22

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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.