Home / 18,828.50-28,215.50-10,396.66

Finding the Fourth Proportional to 18,828.50, 28,215.50 and 10,396.66

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Solution

The fourth proportional to 18,828.50, 28,215.50 and 10,396.66 is: 15,579.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.50 : 28,215.50 = 10,396.66 : x
  2. Step 2: Convert to fraction form
    18,828.50/28,215.50 = 10,396.66/x
  3. Step 3: Cross multiply
    18,828.50x = 28,215.50 × 10,396.66
  4. Step 4: Simplify right side
    18,828.50x = 293,346,960.23
  5. Step 5: Solve for x
    x = 293,346,960.23/18,828.50
  6. Step 6: Final answer
    x = 15,579.94

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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.