Home / 12,358,906.60-18,538,359.90-7,823,943.40

Finding the Fourth Proportional to 12,358,906.60, 18,538,359.90 and 7,823,943.40

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Solution

The fourth proportional to 12,358,906.60, 18,538,359.90 and 7,823,943.40 is: 11,735,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,906.60 : 18,538,359.90 = 7,823,943.40 : x
  2. Step 2: Convert to fraction form
    12,358,906.60/18,538,359.90 = 7,823,943.40/x
  3. Step 3: Cross multiply
    12,358,906.60x = 18,538,359.90 × 7,823,943.40
  4. Step 4: Simplify right side
    12,358,906.60x = 145,043,078,586,429.66
  5. Step 5: Solve for x
    x = 145,043,078,586,429.66/12,358,906.60
  6. Step 6: Final answer
    x = 11,735,915.10

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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.