Home / 21,505,570.70-32,211,116.85-12,971,021.90

Finding the Fourth Proportional to 21,505,570.70, 32,211,116.85 and 12,971,021.90

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Solution

The fourth proportional to 21,505,570.70, 32,211,116.85 and 12,971,021.90 is: 19,428,040.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505,570.70 : 32,211,116.85 = 12,971,021.90 : x
  2. Step 2: Convert to fraction form
    21,505,570.70/32,211,116.85 = 12,971,021.90/x
  3. Step 3: Cross multiply
    21,505,570.70x = 32,211,116.85 × 12,971,021.90
  4. Step 4: Simplify right side
    21,505,570.70x = 417,811,102,084,809.06
  5. Step 5: Solve for x
    x = 417,811,102,084,809.06/21,505,570.70
  6. Step 6: Final answer
    x = 19,428,040.67

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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.