Home / 12,528,031.40-18,820,040.70-12,192,108.20

Finding the Fourth Proportional to 12,528,031.40, 18,820,040.70 and 12,192,108.20

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Solution

The fourth proportional to 12,528,031.40, 18,820,040.70 and 12,192,108.20 is: 18,315,405.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528,031.40 : 18,820,040.70 = 12,192,108.20 : x
  2. Step 2: Convert to fraction form
    12,528,031.40/18,820,040.70 = 12,192,108.20/x
  3. Step 3: Cross multiply
    12,528,031.40x = 18,820,040.70 × 12,192,108.20
  4. Step 4: Simplify right side
    12,528,031.40x = 229,455,972,542,803.72
  5. Step 5: Solve for x
    x = 229,455,972,542,803.72/12,528,031.40
  6. Step 6: Final answer
    x = 18,315,405.29

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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.