Home / 13,479,946.90-20,219,920.35-8,378,113.30

Finding the Fourth Proportional to 13,479,946.90, 20,219,920.35 and 8,378,113.30

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Solution

The fourth proportional to 13,479,946.90, 20,219,920.35 and 8,378,113.30 is: 12,567,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,946.90 : 20,219,920.35 = 8,378,113.30 : x
  2. Step 2: Convert to fraction form
    13,479,946.90/20,219,920.35 = 8,378,113.30/x
  3. Step 3: Cross multiply
    13,479,946.90x = 20,219,920.35 × 8,378,113.30
  4. Step 4: Simplify right side
    13,479,946.90x = 169,404,783,609,275.66
  5. Step 5: Solve for x
    x = 169,404,783,609,275.66/13,479,946.90
  6. Step 6: Final answer
    x = 12,567,169.95

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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.