Home / 28,193.18-38,908.96-15,619.10

Finding the Fourth Proportional to 28,193.18, 38,908.96 and 15,619.10

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Solution

The fourth proportional to 28,193.18, 38,908.96 and 15,619.10 is: 21,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.18 : 38,908.96 = 15,619.10 : x
  2. Step 2: Convert to fraction form
    28,193.18/38,908.96 = 15,619.10/x
  3. Step 3: Cross multiply
    28,193.18x = 38,908.96 × 15,619.10
  4. Step 4: Simplify right side
    28,193.18x = 607,722,937.14
  5. Step 5: Solve for x
    x = 607,722,937.14/28,193.18
  6. Step 6: Final answer
    x = 21,555.67

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1.5x scale

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.