Home / 18,387.51-27,571.18-8,521.35

Finding the Fourth Proportional to 18,387.51, 27,571.18 and 8,521.35

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Solution

The fourth proportional to 18,387.51, 27,571.18 and 8,521.35 is: 12,777.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.51 : 27,571.18 = 8,521.35 : x
  2. Step 2: Convert to fraction form
    18,387.51/27,571.18 = 8,521.35/x
  3. Step 3: Cross multiply
    18,387.51x = 27,571.18 × 8,521.35
  4. Step 4: Simplify right side
    18,387.51x = 234,943,674.69
  5. Step 5: Solve for x
    x = 234,943,674.69/18,387.51
  6. Step 6: Final answer
    x = 12,777.35

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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.