Home / 20,730,922-28,606,879.08-13,389,075.60

Finding the Fourth Proportional to 20,730,922, 28,606,879.08 and 13,389,075.60

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Solution

The fourth proportional to 20,730,922, 28,606,879.08 and 13,389,075.60 is: 18,475,766.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,922 : 28,606,879.08 = 13,389,075.60 : x
  2. Step 2: Convert to fraction form
    20,730,922/28,606,879.08 = 13,389,075.60/x
  3. Step 3: Cross multiply
    20,730,922x = 28,606,879.08 × 13,389,075.60
  4. Step 4: Simplify right side
    20,730,922x = 383,019,666,682,178.44
  5. Step 5: Solve for x
    x = 383,019,666,682,178.44/20,730,922
  6. Step 6: Final answer
    x = 18,475,766.14

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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.