Home / 12,943,612.80-19,415,419.20-12,145,795.20

Finding the Fourth Proportional to 12,943,612.80, 19,415,419.20 and 12,145,795.20

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Solution

The fourth proportional to 12,943,612.80, 19,415,419.20 and 12,145,795.20 is: 18,218,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943,612.80 : 19,415,419.20 = 12,145,795.20 : x
  2. Step 2: Convert to fraction form
    12,943,612.80/19,415,419.20 = 12,145,795.20/x
  3. Step 3: Cross multiply
    12,943,612.80x = 19,415,419.20 × 12,145,795.20
  4. Step 4: Simplify right side
    12,943,612.80x = 235,815,705,325,347.81
  5. Step 5: Solve for x
    x = 235,815,705,325,347.81/12,943,612.80
  6. Step 6: Final answer
    x = 18,218,692.80

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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.