Home / 12,996,720.60-19,509,077.70-7,328,016.60

Finding the Fourth Proportional to 12,996,720.60, 19,509,077.70 and 7,328,016.60

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Solution

The fourth proportional to 12,996,720.60, 19,509,077.70 and 7,328,016.60 is: 10,999,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996,720.60 : 19,509,077.70 = 7,328,016.60 : x
  2. Step 2: Convert to fraction form
    12,996,720.60/19,509,077.70 = 7,328,016.60/x
  3. Step 3: Cross multiply
    12,996,720.60x = 19,509,077.70 × 7,328,016.60
  4. Step 4: Simplify right side
    12,996,720.60x = 142,962,845,236,289.81
  5. Step 5: Solve for x
    x = 142,962,845,236,289.81/12,996,720.60
  6. Step 6: Final answer
    x = 10,999,916.80

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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.