Home / 13,121,226.45-18,107,300.21-7,320,008.18

Finding the Fourth Proportional to 13,121,226.45, 18,107,300.21 and 7,320,008.18

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Solution

The fourth proportional to 13,121,226.45, 18,107,300.21 and 7,320,008.18 is: 10,101,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,226.45 : 18,107,300.21 = 7,320,008.18 : x
  2. Step 2: Convert to fraction form
    13,121,226.45/18,107,300.21 = 7,320,008.18/x
  3. Step 3: Cross multiply
    13,121,226.45x = 18,107,300.21 × 7,320,008.18
  4. Step 4: Simplify right side
    13,121,226.45x = 132,545,585,663,583.92
  5. Step 5: Solve for x
    x = 132,545,585,663,583.92/13,121,226.45
  6. Step 6: Final answer
    x = 10,101,615.59

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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.