Home / 28,190.52-38,884.16-18,131.69

Finding the Fourth Proportional to 28,190.52, 38,884.16 and 18,131.69

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Solution

The fourth proportional to 28,190.52, 38,884.16 and 18,131.69 is: 25,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.52 : 38,884.16 = 18,131.69 : x
  2. Step 2: Convert to fraction form
    28,190.52/38,884.16 = 18,131.69/x
  3. Step 3: Cross multiply
    28,190.52x = 38,884.16 × 18,131.69
  4. Step 4: Simplify right side
    28,190.52x = 705,035,535.03
  5. Step 5: Solve for x
    x = 705,035,535.03/28,190.52
  6. Step 6: Final answer
    x = 25,009.67

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Double scale
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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.