Home / 19,099.72-28,657.80-13,588.48

Finding the Fourth Proportional to 19,099.72, 28,657.80 and 13,588.48

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Solution

The fourth proportional to 19,099.72, 28,657.80 and 13,588.48 is: 20,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.72 : 28,657.80 = 13,588.48 : x
  2. Step 2: Convert to fraction form
    19,099.72/28,657.80 = 13,588.48/x
  3. Step 3: Cross multiply
    19,099.72x = 28,657.80 × 13,588.48
  4. Step 4: Simplify right side
    19,099.72x = 389,415,942.14
  5. Step 5: Solve for x
    x = 389,415,942.14/19,099.72
  6. Step 6: Final answer
    x = 20,388.57

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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.