Home / 21,211,785.48-29,271,439.95-12,965,654.60

Finding the Fourth Proportional to 21,211,785.48, 29,271,439.95 and 12,965,654.60

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Solution

The fourth proportional to 21,211,785.48, 29,271,439.95 and 12,965,654.60 is: 17,892,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211,785.48 : 29,271,439.95 = 12,965,654.60 : x
  2. Step 2: Convert to fraction form
    21,211,785.48/29,271,439.95 = 12,965,654.60/x
  3. Step 3: Cross multiply
    21,211,785.48x = 29,271,439.95 × 12,965,654.60
  4. Step 4: Simplify right side
    21,211,785.48x = 379,523,379,889,984.06
  5. Step 5: Solve for x
    x = 379,523,379,889,984.06/21,211,785.48
  6. Step 6: Final answer
    x = 17,892,099.67

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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.