Home / 12,720,570.96-19,069,784.72-8,172,912.22

Finding the Fourth Proportional to 12,720,570.96, 19,069,784.72 and 8,172,912.22

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Solution

The fourth proportional to 12,720,570.96, 19,069,784.72 and 8,172,912.22 is: 12,252,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720,570.96 : 19,069,784.72 = 8,172,912.22 : x
  2. Step 2: Convert to fraction form
    12,720,570.96/19,069,784.72 = 8,172,912.22/x
  3. Step 3: Cross multiply
    12,720,570.96x = 19,069,784.72 × 8,172,912.22
  4. Step 4: Simplify right side
    12,720,570.96x = 155,855,676,570,857.25
  5. Step 5: Solve for x
    x = 155,855,676,570,857.25/12,720,570.96
  6. Step 6: Final answer
    x = 12,252,254.80

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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.