Home / 18,689,868.60-27,990,566.10-12,673,663.80

Finding the Fourth Proportional to 18,689,868.60, 27,990,566.10 and 12,673,663.80

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Solution

The fourth proportional to 18,689,868.60, 27,990,566.10 and 12,673,663.80 is: 18,980,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,868.60 : 27,990,566.10 = 12,673,663.80 : x
  2. Step 2: Convert to fraction form
    18,689,868.60/27,990,566.10 = 12,673,663.80/x
  3. Step 3: Cross multiply
    18,689,868.60x = 27,990,566.10 × 12,673,663.80
  4. Step 4: Simplify right side
    18,689,868.60x = 354,743,024,323,077.25
  5. Step 5: Solve for x
    x = 354,743,024,323,077.25/18,689,868.60
  6. Step 6: Final answer
    x = 18,980,498.57

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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.