Home / 13,728,340-18,945,111.48-7,616,753.92

Finding the Fourth Proportional to 13,728,340, 18,945,111.48 and 7,616,753.92

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Solution

The fourth proportional to 13,728,340, 18,945,111.48 and 7,616,753.92 is: 10,511,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728,340 : 18,945,111.48 = 7,616,753.92 : x
  2. Step 2: Convert to fraction form
    13,728,340/18,945,111.48 = 7,616,753.92/x
  3. Step 3: Cross multiply
    13,728,340x = 18,945,111.48 × 7,616,753.92
  4. Step 4: Simplify right side
    13,728,340x = 144,300,252,130,127
  5. Step 5: Solve for x
    x = 144,300,252,130,127/13,728,340
  6. Step 6: Final answer
    x = 10,511,121.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.