Home / 20,539,656.63-28,345,611.69-11,372,299.38

Finding the Fourth Proportional to 20,539,656.63, 28,345,611.69 and 11,372,299.38

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Solution

The fourth proportional to 20,539,656.63, 28,345,611.69 and 11,372,299.38 is: 15,694,263.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,656.63 : 28,345,611.69 = 11,372,299.38 : x
  2. Step 2: Convert to fraction form
    20,539,656.63/28,345,611.69 = 11,372,299.38/x
  3. Step 3: Cross multiply
    20,539,656.63x = 28,345,611.69 × 11,372,299.38
  4. Step 4: Simplify right side
    20,539,656.63x = 322,354,782,247,907.81
  5. Step 5: Solve for x
    x = 322,354,782,247,907.81/20,539,656.63
  6. Step 6: Final answer
    x = 15,694,263.45

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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.