Home / 30,378,012.53-41,921,763.12-16,439,364.15

Finding the Fourth Proportional to 30,378,012.53, 41,921,763.12 and 16,439,364.15

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Solution

The fourth proportional to 30,378,012.53, 41,921,763.12 and 16,439,364.15 is: 22,686,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378,012.53 : 41,921,763.12 = 16,439,364.15 : x
  2. Step 2: Convert to fraction form
    30,378,012.53/41,921,763.12 = 16,439,364.15/x
  3. Step 3: Cross multiply
    30,378,012.53x = 41,921,763.12 × 16,439,364.15
  4. Step 4: Simplify right side
    30,378,012.53x = 689,167,129,739,720.12
  5. Step 5: Solve for x
    x = 689,167,129,739,720.12/30,378,012.53
  6. Step 6: Final answer
    x = 22,686,379.80

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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.