Home / 21,261,640.40-31,892,460.60-20,001,928.40

Finding the Fourth Proportional to 21,261,640.40, 31,892,460.60 and 20,001,928.40

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Solution

The fourth proportional to 21,261,640.40, 31,892,460.60 and 20,001,928.40 is: 30,002,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261,640.40 : 31,892,460.60 = 20,001,928.40 : x
  2. Step 2: Convert to fraction form
    21,261,640.40/31,892,460.60 = 20,001,928.40/x
  3. Step 3: Cross multiply
    21,261,640.40x = 31,892,460.60 × 20,001,928.40
  4. Step 4: Simplify right side
    21,261,640.40x = 637,910,713,421,021
  5. Step 5: Solve for x
    x = 637,910,713,421,021/21,261,640.40
  6. Step 6: Final answer
    x = 30,002,892.60

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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.