Home / 12,478,409.20-18,689,620.20-10,238,921.20

Finding the Fourth Proportional to 12,478,409.20, 18,689,620.20 and 10,238,921.20

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Solution

The fourth proportional to 12,478,409.20, 18,689,620.20 and 10,238,921.20 is: 15,335,412.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,409.20 : 18,689,620.20 = 10,238,921.20 : x
  2. Step 2: Convert to fraction form
    12,478,409.20/18,689,620.20 = 10,238,921.20/x
  3. Step 3: Cross multiply
    12,478,409.20x = 18,689,620.20 × 10,238,921.20
  4. Step 4: Simplify right side
    12,478,409.20x = 191,361,548,485,728.22
  5. Step 5: Solve for x
    x = 191,361,548,485,728.22/12,478,409.20
  6. Step 6: Final answer
    x = 15,335,412.18

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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.