Home / 20,887,219.80-31,330,829.70-19,092,130.20

Finding the Fourth Proportional to 20,887,219.80, 31,330,829.70 and 19,092,130.20

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Solution

The fourth proportional to 20,887,219.80, 31,330,829.70 and 19,092,130.20 is: 28,638,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887,219.80 : 31,330,829.70 = 19,092,130.20 : x
  2. Step 2: Convert to fraction form
    20,887,219.80/31,330,829.70 = 19,092,130.20/x
  3. Step 3: Cross multiply
    20,887,219.80x = 31,330,829.70 × 19,092,130.20
  4. Step 4: Simplify right side
    20,887,219.80x = 598,172,279,906,426.88
  5. Step 5: Solve for x
    x = 598,172,279,906,426.88/20,887,219.80
  6. Step 6: Final answer
    x = 28,638,195.30

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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.