Home / 14,991,081.78-20,687,739.42-8,115,547.44

Finding the Fourth Proportional to 14,991,081.78, 20,687,739.42 and 8,115,547.44

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Solution

The fourth proportional to 14,991,081.78, 20,687,739.42 and 8,115,547.44 is: 11,199,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,991,081.78 : 20,687,739.42 = 8,115,547.44 : x
  2. Step 2: Convert to fraction form
    14,991,081.78/20,687,739.42 = 8,115,547.44/x
  3. Step 3: Cross multiply
    14,991,081.78x = 20,687,739.42 × 8,115,547.44
  4. Step 4: Simplify right side
    14,991,081.78x = 167,892,330,689,368.09
  5. Step 5: Solve for x
    x = 167,892,330,689,368.09/14,991,081.78
  6. Step 6: Final answer
    x = 11,199,480.67

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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.