Home / 18,215.69-27,315.63-7,690.41

Finding the Fourth Proportional to 18,215.69, 27,315.63 and 7,690.41

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Solution

The fourth proportional to 18,215.69, 27,315.63 and 7,690.41 is: 11,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.69 : 27,315.63 = 7,690.41 : x
  2. Step 2: Convert to fraction form
    18,215.69/27,315.63 = 7,690.41/x
  3. Step 3: Cross multiply
    18,215.69x = 27,315.63 × 7,690.41
  4. Step 4: Simplify right side
    18,215.69x = 210,068,394.11
  5. Step 5: Solve for x
    x = 210,068,394.11/18,215.69
  6. Step 6: Final answer
    x = 11,532.28

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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.