Home / 21,505,570.20-32,211,116.10-12,971,021.40

Finding the Fourth Proportional to 21,505,570.20, 32,211,116.10 and 12,971,021.40

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Solution

The fourth proportional to 21,505,570.20, 32,211,116.10 and 12,971,021.40 is: 19,428,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505,570.20 : 32,211,116.10 = 12,971,021.40 : x
  2. Step 2: Convert to fraction form
    21,505,570.20/32,211,116.10 = 12,971,021.40/x
  3. Step 3: Cross multiply
    21,505,570.20x = 32,211,116.10 × 12,971,021.40
  4. Step 4: Simplify right side
    21,505,570.20x = 417,811,076,250,984.56
  5. Step 5: Solve for x
    x = 417,811,076,250,984.56/21,505,570.20
  6. Step 6: Final answer
    x = 19,428,039.92

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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.