Home / 12,358,905.60-18,538,358.40-7,823,942.40

Finding the Fourth Proportional to 12,358,905.60, 18,538,358.40 and 7,823,942.40

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Solution

The fourth proportional to 12,358,905.60, 18,538,358.40 and 7,823,942.40 is: 11,735,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,905.60 : 18,538,358.40 = 7,823,942.40 : x
  2. Step 2: Convert to fraction form
    12,358,905.60/18,538,358.40 = 7,823,942.40/x
  3. Step 3: Cross multiply
    12,358,905.60x = 18,538,358.40 × 7,823,942.40
  4. Step 4: Simplify right side
    12,358,905.60x = 145,043,048,312,156.16
  5. Step 5: Solve for x
    x = 145,043,048,312,156.16/12,358,905.60
  6. Step 6: Final answer
    x = 11,735,913.60

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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.