Home / 20,111,138.80-30,166,708.20-6,647,966.80

Finding the Fourth Proportional to 20,111,138.80, 30,166,708.20 and 6,647,966.80

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Solution

The fourth proportional to 20,111,138.80, 30,166,708.20 and 6,647,966.80 is: 9,971,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,138.80 : 30,166,708.20 = 6,647,966.80 : x
  2. Step 2: Convert to fraction form
    20,111,138.80/30,166,708.20 = 6,647,966.80/x
  3. Step 3: Cross multiply
    20,111,138.80x = 30,166,708.20 × 6,647,966.80
  4. Step 4: Simplify right side
    20,111,138.80x = 200,547,274,578,887.75
  5. Step 5: Solve for x
    x = 200,547,274,578,887.75/20,111,138.80
  6. Step 6: Final answer
    x = 9,971,950.20

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1.5x scale

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.