Home / 12,591,831.80-18,887,747.70-4,078,278.20

Finding the Fourth Proportional to 12,591,831.80, 18,887,747.70 and 4,078,278.20

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Solution

The fourth proportional to 12,591,831.80, 18,887,747.70 and 4,078,278.20 is: 6,117,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591,831.80 : 18,887,747.70 = 4,078,278.20 : x
  2. Step 2: Convert to fraction form
    12,591,831.80/18,887,747.70 = 4,078,278.20/x
  3. Step 3: Cross multiply
    12,591,831.80x = 18,887,747.70 × 4,078,278.20
  4. Step 4: Simplify right side
    12,591,831.80x = 77,029,489,692,010.14
  5. Step 5: Solve for x
    x = 77,029,489,692,010.14/12,591,831.80
  6. Step 6: Final answer
    x = 6,117,417.30

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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.