Home / 20,739,940.40-31,109,910.60-19,480,228.40

Finding the Fourth Proportional to 20,739,940.40, 31,109,910.60 and 19,480,228.40

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Solution

The fourth proportional to 20,739,940.40, 31,109,910.60 and 19,480,228.40 is: 29,220,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,940.40 : 31,109,910.60 = 19,480,228.40 : x
  2. Step 2: Convert to fraction form
    20,739,940.40/31,109,910.60 = 19,480,228.40/x
  3. Step 3: Cross multiply
    20,739,940.40x = 31,109,910.60 × 19,480,228.40
  4. Step 4: Simplify right side
    20,739,940.40x = 606,028,163,991,581
  5. Step 5: Solve for x
    x = 606,028,163,991,581/20,739,940.40
  6. Step 6: Final answer
    x = 29,220,342.60

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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.