Home / 20,213,218.80-30,321,140.40-10,647,280.80

Finding the Fourth Proportional to 20,213,218.80, 30,321,140.40 and 10,647,280.80

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Solution

The fourth proportional to 20,213,218.80, 30,321,140.40 and 10,647,280.80 is: 15,971,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213,218.80 : 30,321,140.40 = 10,647,280.80 : x
  2. Step 2: Convert to fraction form
    20,213,218.80/30,321,140.40 = 10,647,280.80/x
  3. Step 3: Cross multiply
    20,213,218.80x = 30,321,140.40 × 10,647,280.80
  4. Step 4: Simplify right side
    20,213,218.80x = 322,837,696,015,024.31
  5. Step 5: Solve for x
    x = 322,837,696,015,024.31/20,213,218.80
  6. Step 6: Final answer
    x = 15,971,612.40

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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.