Home / 18,379,738.76-25,364,643.75-10,120,407.50

Finding the Fourth Proportional to 18,379,738.76, 25,364,643.75 and 10,120,407.50

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Solution

The fourth proportional to 18,379,738.76, 25,364,643.75 and 10,120,407.50 is: 13,966,495.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379,738.76 : 25,364,643.75 = 10,120,407.50 : x
  2. Step 2: Convert to fraction form
    18,379,738.76/25,364,643.75 = 10,120,407.50/x
  3. Step 3: Cross multiply
    18,379,738.76x = 25,364,643.75 × 10,120,407.50
  4. Step 4: Simplify right side
    18,379,738.76x = 256,700,530,905,739.72
  5. Step 5: Solve for x
    x = 256,700,530,905,739.72/18,379,738.76
  6. Step 6: Final answer
    x = 13,966,495.08

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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.