Home / 13,578,871.03-18,738,271.60-7,698,900.78

Finding the Fourth Proportional to 13,578,871.03, 18,738,271.60 and 7,698,900.78

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Solution

The fourth proportional to 13,578,871.03, 18,738,271.60 and 7,698,900.78 is: 10,624,159.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578,871.03 : 18,738,271.60 = 7,698,900.78 : x
  2. Step 2: Convert to fraction form
    13,578,871.03/18,738,271.60 = 7,698,900.78/x
  3. Step 3: Cross multiply
    13,578,871.03x = 18,738,271.60 × 7,698,900.78
  4. Step 4: Simplify right side
    13,578,871.03x = 144,264,093,837,091.88
  5. Step 5: Solve for x
    x = 144,264,093,837,091.88/13,578,871.03
  6. Step 6: Final answer
    x = 10,624,159.66

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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.