Home / 21,872,221.37-30,184,582.55-12,579,794.03

Finding the Fourth Proportional to 21,872,221.37, 30,184,582.55 and 12,579,794.03

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Solution

The fourth proportional to 21,872,221.37, 30,184,582.55 and 12,579,794.03 is: 17,360,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872,221.37 : 30,184,582.55 = 12,579,794.03 : x
  2. Step 2: Convert to fraction form
    21,872,221.37/30,184,582.55 = 12,579,794.03/x
  3. Step 3: Cross multiply
    21,872,221.37x = 30,184,582.55 × 12,579,794.03
  4. Step 4: Simplify right side
    21,872,221.37x = 379,715,831,443,856
  5. Step 5: Solve for x
    x = 379,715,831,443,856/21,872,221.37
  6. Step 6: Final answer
    x = 17,360,643.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.