Home / 12,945,718.40-19,423,243.20-5,378,115.20

Finding the Fourth Proportional to 12,945,718.40, 19,423,243.20 and 5,378,115.20

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Solution

The fourth proportional to 12,945,718.40, 19,423,243.20 and 5,378,115.20 is: 8,069,111.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,718.40 : 19,423,243.20 = 5,378,115.20 : x
  2. Step 2: Convert to fraction form
    12,945,718.40/19,423,243.20 = 5,378,115.20/x
  3. Step 3: Cross multiply
    12,945,718.40x = 19,423,243.20 × 5,378,115.20
  4. Step 4: Simplify right side
    12,945,718.40x = 104,460,439,487,216.64
  5. Step 5: Solve for x
    x = 104,460,439,487,216.64/12,945,718.40
  6. Step 6: Final answer
    x = 8,069,111.06

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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.