Home / 21,279,789-29,366,295.30-12,113,021.16

Finding the Fourth Proportional to 21,279,789, 29,366,295.30 and 12,113,021.16

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Solution

The fourth proportional to 21,279,789, 29,366,295.30 and 12,113,021.16 is: 16,716,075.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279,789 : 29,366,295.30 = 12,113,021.16 : x
  2. Step 2: Convert to fraction form
    21,279,789/29,366,295.30 = 12,113,021.16/x
  3. Step 3: Cross multiply
    21,279,789x = 29,366,295.30 × 12,113,021.16
  4. Step 4: Simplify right side
    21,279,789x = 355,714,556,359,708.56
  5. Step 5: Solve for x
    x = 355,714,556,359,708.56/21,279,789
  6. Step 6: Final answer
    x = 16,716,075.35

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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.