Home / 15,419,880-21,279,900.96-8,543,718.72

Finding the Fourth Proportional to 15,419,880, 21,279,900.96 and 8,543,718.72

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Solution

The fourth proportional to 15,419,880, 21,279,900.96 and 8,543,718.72 is: 11,790,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419,880 : 21,279,900.96 = 8,543,718.72 : x
  2. Step 2: Convert to fraction form
    15,419,880/21,279,900.96 = 8,543,718.72/x
  3. Step 3: Cross multiply
    15,419,880x = 21,279,900.96 × 8,543,718.72
  4. Step 4: Simplify right side
    15,419,880x = 181,809,488,191,698
  5. Step 5: Solve for x
    x = 181,809,488,191,698/15,419,880
  6. Step 6: Final answer
    x = 11,790,590.34

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1.5x scale

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.