Home / 12,485,429.80-18,715,703.10-5,742,082.60

Finding the Fourth Proportional to 12,485,429.80, 18,715,703.10 and 5,742,082.60

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Solution

The fourth proportional to 12,485,429.80, 18,715,703.10 and 5,742,082.60 is: 8,607,401.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485,429.80 : 18,715,703.10 = 5,742,082.60 : x
  2. Step 2: Convert to fraction form
    12,485,429.80/18,715,703.10 = 5,742,082.60/x
  3. Step 3: Cross multiply
    12,485,429.80x = 18,715,703.10 × 5,742,082.60
  4. Step 4: Simplify right side
    12,485,429.80x = 107,467,113,117,276.06
  5. Step 5: Solve for x
    x = 107,467,113,117,276.06/12,485,429.80
  6. Step 6: Final answer
    x = 8,607,401.97

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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.