Home / 12,987,776.20-19,477,071.60-4,466,130.70

Finding the Fourth Proportional to 12,987,776.20, 19,477,071.60 and 4,466,130.70

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Solution

The fourth proportional to 12,987,776.20, 19,477,071.60 and 4,466,130.70 is: 6,697,616.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987,776.20 : 19,477,071.60 = 4,466,130.70 : x
  2. Step 2: Convert to fraction form
    12,987,776.20/19,477,071.60 = 4,466,130.70/x
  3. Step 3: Cross multiply
    12,987,776.20x = 19,477,071.60 × 4,466,130.70
  4. Step 4: Simplify right side
    12,987,776.20x = 86,987,147,418,858.12
  5. Step 5: Solve for x
    x = 86,987,147,418,858.12/12,987,776.20
  6. Step 6: Final answer
    x = 6,697,616.75

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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.