Home / 21,002,812.80-31,504,219.20-20,870,102.40

Finding the Fourth Proportional to 21,002,812.80, 31,504,219.20 and 20,870,102.40

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Solution

The fourth proportional to 21,002,812.80, 31,504,219.20 and 20,870,102.40 is: 31,305,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,812.80 : 31,504,219.20 = 20,870,102.40 : x
  2. Step 2: Convert to fraction form
    21,002,812.80/31,504,219.20 = 20,870,102.40/x
  3. Step 3: Cross multiply
    21,002,812.80x = 31,504,219.20 × 20,870,102.40
  4. Step 4: Simplify right side
    21,002,812.80x = 657,496,280,736,046
  5. Step 5: Solve for x
    x = 657,496,280,736,046/21,002,812.80
  6. Step 6: Final answer
    x = 31,305,153.60

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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.