Home / 20,460,467,286.78-28,235,146,816.71-11,428,353,915.90

Finding the Fourth Proportional to 20,460,467,286.78, 28,235,146,816.71 and 11,428,353,915.90

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Solution

The fourth proportional to 20,460,467,286.78, 28,235,146,816.71 and 11,428,353,915.90 is: 15,770,961,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460,467,286.78 : 28,235,146,816.71 = 11,428,353,915.90 : x
  2. Step 2: Convert to fraction form
    20,460,467,286.78/28,235,146,816.71 = 11,428,353,915.90/x
  3. Step 3: Cross multiply
    20,460,467,286.78x = 28,235,146,816.71 × 11,428,353,915.90
  4. Step 4: Simplify right side
    20,460,467,286.78x = 322,681,250,688,759,103,488
  5. Step 5: Solve for x
    x = 322,681,250,688,759,103,488/20,460,467,286.78
  6. Step 6: Final answer
    x = 15,770,961,931.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.