Home / 12,021.43-18,041.45-7,860.31

Finding the Fourth Proportional to 12,021.43, 18,041.45 and 7,860.31

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Solution

The fourth proportional to 12,021.43, 18,041.45 and 7,860.31 is: 11,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.43 : 18,041.45 = 7,860.31 : x
  2. Step 2: Convert to fraction form
    12,021.43/18,041.45 = 7,860.31/x
  3. Step 3: Cross multiply
    12,021.43x = 18,041.45 × 7,860.31
  4. Step 4: Simplify right side
    12,021.43x = 141,811,389.85
  5. Step 5: Solve for x
    x = 141,811,389.85/12,021.43
  6. Step 6: Final answer
    x = 11,796.55

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1.5x scale

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.