Home / 12,643,320.20-18,936,986.70-10,403,832.20

Finding the Fourth Proportional to 12,643,320.20, 18,936,986.70 and 10,403,832.20

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Solution

The fourth proportional to 12,643,320.20, 18,936,986.70 and 10,403,832.20 is: 15,582,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643,320.20 : 18,936,986.70 = 10,403,832.20 : x
  2. Step 2: Convert to fraction form
    12,643,320.20/18,936,986.70 = 10,403,832.20/x
  3. Step 3: Cross multiply
    12,643,320.20x = 18,936,986.70 × 10,403,832.20
  4. Step 4: Simplify right side
    12,643,320.20x = 197,017,232,000,431.72
  5. Step 5: Solve for x
    x = 197,017,232,000,431.72/12,643,320.20
  6. Step 6: Final answer
    x = 15,582,713.15

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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.