Home / 28,271,649.41-39,016,542.66-21,290,009.32

Finding the Fourth Proportional to 28,271,649.41, 39,016,542.66 and 21,290,009.32

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Solution

The fourth proportional to 28,271,649.41, 39,016,542.66 and 21,290,009.32 is: 29,381,467.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271,649.41 : 39,016,542.66 = 21,290,009.32 : x
  2. Step 2: Convert to fraction form
    28,271,649.41/39,016,542.66 = 21,290,009.32/x
  3. Step 3: Cross multiply
    28,271,649.41x = 39,016,542.66 × 21,290,009.32
  4. Step 4: Simplify right side
    28,271,649.41x = 830,662,556,954,267
  5. Step 5: Solve for x
    x = 830,662,556,954,267/28,271,649.41
  6. Step 6: Final answer
    x = 29,381,467.81

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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.