Home / 21,505,613.80-32,258,420.70-20,775,706.60

Finding the Fourth Proportional to 21,505,613.80, 32,258,420.70 and 20,775,706.60

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Solution

The fourth proportional to 21,505,613.80, 32,258,420.70 and 20,775,706.60 is: 31,163,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505,613.80 : 32,258,420.70 = 20,775,706.60 : x
  2. Step 2: Convert to fraction form
    21,505,613.80/32,258,420.70 = 20,775,706.60/x
  3. Step 3: Cross multiply
    21,505,613.80x = 32,258,420.70 × 20,775,706.60
  4. Step 4: Simplify right side
    21,505,613.80x = 670,191,483,842,566.62
  5. Step 5: Solve for x
    x = 670,191,483,842,566.62/21,505,613.80
  6. Step 6: Final answer
    x = 31,163,559.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.