Home / 12,618,911.90-18,928,367.85-7,832,006.30

Finding the Fourth Proportional to 12,618,911.90, 18,928,367.85 and 7,832,006.30

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Solution

The fourth proportional to 12,618,911.90, 18,928,367.85 and 7,832,006.30 is: 11,748,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,911.90 : 18,928,367.85 = 7,832,006.30 : x
  2. Step 2: Convert to fraction form
    12,618,911.90/18,928,367.85 = 7,832,006.30/x
  3. Step 3: Cross multiply
    12,618,911.90x = 18,928,367.85 × 7,832,006.30
  4. Step 4: Simplify right side
    12,618,911.90x = 148,247,096,249,917.47
  5. Step 5: Solve for x
    x = 148,247,096,249,917.47/12,618,911.90
  6. Step 6: Final answer
    x = 11,748,009.45

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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.