Home / 13,290,412.06-18,340,768.74-7,178,840.56

Finding the Fourth Proportional to 13,290,412.06, 18,340,768.74 and 7,178,840.56

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Solution

The fourth proportional to 13,290,412.06, 18,340,768.74 and 7,178,840.56 is: 9,906,800.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,412.06 : 18,340,768.74 = 7,178,840.56 : x
  2. Step 2: Convert to fraction form
    13,290,412.06/18,340,768.74 = 7,178,840.56/x
  3. Step 3: Cross multiply
    13,290,412.06x = 18,340,768.74 × 7,178,840.56
  4. Step 4: Simplify right side
    13,290,412.06x = 131,665,454,532,292.08
  5. Step 5: Solve for x
    x = 131,665,454,532,292.08/13,290,412.06
  6. Step 6: Final answer
    x = 9,906,800.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.