Home / 21,160,915.20-31,741,372.80-13,047,582.60

Finding the Fourth Proportional to 21,160,915.20, 31,741,372.80 and 13,047,582.60

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Solution

The fourth proportional to 21,160,915.20, 31,741,372.80 and 13,047,582.60 is: 19,571,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160,915.20 : 31,741,372.80 = 13,047,582.60 : x
  2. Step 2: Convert to fraction form
    21,160,915.20/31,741,372.80 = 13,047,582.60/x
  3. Step 3: Cross multiply
    21,160,915.20x = 31,741,372.80 × 13,047,582.60
  4. Step 4: Simplify right side
    21,160,915.20x = 414,148,183,445,393.25
  5. Step 5: Solve for x
    x = 414,148,183,445,393.25/21,160,915.20
  6. Step 6: Final answer
    x = 19,571,373.90

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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.