Home / 12,887,120.40-19,333,445.40-3,912,579.60

Finding the Fourth Proportional to 12,887,120.40, 19,333,445.40 and 3,912,579.60

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Solution

The fourth proportional to 12,887,120.40, 19,333,445.40 and 3,912,579.60 is: 5,869,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,120.40 : 19,333,445.40 = 3,912,579.60 : x
  2. Step 2: Convert to fraction form
    12,887,120.40/19,333,445.40 = 3,912,579.60/x
  3. Step 3: Cross multiply
    12,887,120.40x = 19,333,445.40 × 3,912,579.60
  4. Step 4: Simplify right side
    12,887,120.40x = 75,643,644,069,753.84
  5. Step 5: Solve for x
    x = 75,643,644,069,753.84/12,887,120.40
  6. Step 6: Final answer
    x = 5,869,708.80

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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.