Home / 12,340,728.80-18,511,093.20-10,455,826.40

Finding the Fourth Proportional to 12,340,728.80, 18,511,093.20 and 10,455,826.40

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Solution

The fourth proportional to 12,340,728.80, 18,511,093.20 and 10,455,826.40 is: 15,683,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340,728.80 : 18,511,093.20 = 10,455,826.40 : x
  2. Step 2: Convert to fraction form
    12,340,728.80/18,511,093.20 = 10,455,826.40/x
  3. Step 3: Cross multiply
    12,340,728.80x = 18,511,093.20 × 10,455,826.40
  4. Step 4: Simplify right side
    12,340,728.80x = 193,548,776,973,420.47
  5. Step 5: Solve for x
    x = 193,548,776,973,420.47/12,340,728.80
  6. Step 6: Final answer
    x = 15,683,739.60

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1.5x scale

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.