Home / 18,266,628.15-25,202,015.67-12,455,320.80

Finding the Fourth Proportional to 18,266,628.15, 25,202,015.67 and 12,455,320.80

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Solution

The fourth proportional to 18,266,628.15, 25,202,015.67 and 12,455,320.80 is: 17,184,298.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266,628.15 : 25,202,015.67 = 12,455,320.80 : x
  2. Step 2: Convert to fraction form
    18,266,628.15/25,202,015.67 = 12,455,320.80/x
  3. Step 3: Cross multiply
    18,266,628.15x = 25,202,015.67 × 12,455,320.80
  4. Step 4: Simplify right side
    18,266,628.15x = 313,899,189,976,477
  5. Step 5: Solve for x
    x = 313,899,189,976,477/18,266,628.15
  6. Step 6: Final answer
    x = 17,184,298.46

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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.