Home / 12,128,328.20-18,192,492.30-11,650,031.30

Finding the Fourth Proportional to 12,128,328.20, 18,192,492.30 and 11,650,031.30

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Solution

The fourth proportional to 12,128,328.20, 18,192,492.30 and 11,650,031.30 is: 17,475,046.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,328.20 : 18,192,492.30 = 11,650,031.30 : x
  2. Step 2: Convert to fraction form
    12,128,328.20/18,192,492.30 = 11,650,031.30/x
  3. Step 3: Cross multiply
    12,128,328.20x = 18,192,492.30 × 11,650,031.30
  4. Step 4: Simplify right side
    12,128,328.20x = 211,943,104,720,009
  5. Step 5: Solve for x
    x = 211,943,104,720,009/12,128,328.20
  6. Step 6: Final answer
    x = 17,475,046.95

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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.