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Finding the Fourth Proportional to 15,651,621.20, 23,477,431.80 and 13,486,782.80

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Solution

The fourth proportional to 15,651,621.20, 23,477,431.80 and 13,486,782.80 is: 20,230,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,651,621.20 : 23,477,431.80 = 13,486,782.80 : x
  2. Step 2: Convert to fraction form
    15,651,621.20/23,477,431.80 = 13,486,782.80/x
  3. Step 3: Cross multiply
    15,651,621.20x = 23,477,431.80 × 13,486,782.80
  4. Step 4: Simplify right side
    15,651,621.20x = 316,635,023,388,413.06
  5. Step 5: Solve for x
    x = 316,635,023,388,413.06/15,651,621.20
  6. Step 6: Final answer
    x = 20,230,174.20

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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.