Home / 12,920,669.60-19,381,004.40-3,945,207.20

Finding the Fourth Proportional to 12,920,669.60, 19,381,004.40 and 3,945,207.20

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Solution

The fourth proportional to 12,920,669.60, 19,381,004.40 and 3,945,207.20 is: 5,917,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,669.60 : 19,381,004.40 = 3,945,207.20 : x
  2. Step 2: Convert to fraction form
    12,920,669.60/19,381,004.40 = 3,945,207.20/x
  3. Step 3: Cross multiply
    12,920,669.60x = 19,381,004.40 × 3,945,207.20
  4. Step 4: Simplify right side
    12,920,669.60x = 76,462,078,102,111.67
  5. Step 5: Solve for x
    x = 76,462,078,102,111.67/12,920,669.60
  6. Step 6: Final answer
    x = 5,917,810.80

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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.