Home / 20,111,831.20-30,167,746.80-10,530,146.80

Finding the Fourth Proportional to 20,111,831.20, 30,167,746.80 and 10,530,146.80

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Solution

The fourth proportional to 20,111,831.20, 30,167,746.80 and 10,530,146.80 is: 15,795,220.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,831.20 : 30,167,746.80 = 10,530,146.80 : x
  2. Step 2: Convert to fraction form
    20,111,831.20/30,167,746.80 = 10,530,146.80/x
  3. Step 3: Cross multiply
    20,111,831.20x = 30,167,746.80 × 10,530,146.80
  4. Step 4: Simplify right side
    20,111,831.20x = 317,670,802,429,230.25
  5. Step 5: Solve for x
    x = 317,670,802,429,230.25/20,111,831.20
  6. Step 6: Final answer
    x = 15,795,220.20

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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.