Home / 12,618,911.40-18,928,367.10-7,832,005.80

Finding the Fourth Proportional to 12,618,911.40, 18,928,367.10 and 7,832,005.80

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Solution

The fourth proportional to 12,618,911.40, 18,928,367.10 and 7,832,005.80 is: 11,748,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,911.40 : 18,928,367.10 = 7,832,005.80 : x
  2. Step 2: Convert to fraction form
    12,618,911.40/18,928,367.10 = 7,832,005.80/x
  3. Step 3: Cross multiply
    12,618,911.40x = 18,928,367.10 × 7,832,005.80
  4. Step 4: Simplify right side
    12,618,911.40x = 148,247,080,911,729.19
  5. Step 5: Solve for x
    x = 148,247,080,911,729.19/12,618,911.40
  6. Step 6: Final answer
    x = 11,748,008.70

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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.