Home / 12,783,048.60-19,149,689.70-7,719,317.40

Finding the Fourth Proportional to 12,783,048.60, 19,149,689.70 and 7,719,317.40

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Solution

The fourth proportional to 12,783,048.60, 19,149,689.70 and 7,719,317.40 is: 11,563,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,783,048.60 : 19,149,689.70 = 7,719,317.40 : x
  2. Step 2: Convert to fraction form
    12,783,048.60/19,149,689.70 = 7,719,317.40/x
  3. Step 3: Cross multiply
    12,783,048.60x = 19,149,689.70 × 7,719,317.40
  4. Step 4: Simplify right side
    12,783,048.60x = 147,822,532,905,810.78
  5. Step 5: Solve for x
    x = 147,822,532,905,810.78/12,783,048.60
  6. Step 6: Final answer
    x = 11,563,949.85

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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.