Home / 21,002,823.80-31,504,235.70-20,870,113.40

Finding the Fourth Proportional to 21,002,823.80, 31,504,235.70 and 20,870,113.40

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Solution

The fourth proportional to 21,002,823.80, 31,504,235.70 and 20,870,113.40 is: 31,305,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,823.80 : 31,504,235.70 = 20,870,113.40 : x
  2. Step 2: Convert to fraction form
    21,002,823.80/31,504,235.70 = 20,870,113.40/x
  3. Step 3: Cross multiply
    21,002,823.80x = 31,504,235.70 × 20,870,113.40
  4. Step 4: Simplify right side
    21,002,823.80x = 657,496,971,639,328.38
  5. Step 5: Solve for x
    x = 657,496,971,639,328.38/21,002,823.80
  6. Step 6: Final answer
    x = 31,305,170.10

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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.