Home / 20,669,740.80-31,004,611.20-15,886,771.80

Finding the Fourth Proportional to 20,669,740.80, 31,004,611.20 and 15,886,771.80

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Solution

The fourth proportional to 20,669,740.80, 31,004,611.20 and 15,886,771.80 is: 23,830,157.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669,740.80 : 31,004,611.20 = 15,886,771.80 : x
  2. Step 2: Convert to fraction form
    20,669,740.80/31,004,611.20 = 15,886,771.80/x
  3. Step 3: Cross multiply
    20,669,740.80x = 31,004,611.20 × 15,886,771.80
  4. Step 4: Simplify right side
    20,669,740.80x = 492,563,182,882,124.19
  5. Step 5: Solve for x
    x = 492,563,182,882,124.19/20,669,740.80
  6. Step 6: Final answer
    x = 23,830,157.70

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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.