Home / 10,120.07-15,186.20-8,047.28

Finding the Fourth Proportional to 10,120.07, 15,186.20 and 8,047.28

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Solution

The fourth proportional to 10,120.07, 15,186.20 and 8,047.28 is: 12,075.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.07 : 15,186.20 = 8,047.28 : x
  2. Step 2: Convert to fraction form
    10,120.07/15,186.20 = 8,047.28/x
  3. Step 3: Cross multiply
    10,120.07x = 15,186.20 × 8,047.28
  4. Step 4: Simplify right side
    10,120.07x = 122,207,603.54
  5. Step 5: Solve for x
    x = 122,207,603.54/10,120.07
  6. Step 6: Final answer
    x = 12,075.77

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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.