Home / 19,021.68-28,529.28-5,170.68

Finding the Fourth Proportional to 19,021.68, 28,529.28 and 5,170.68

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Solution

The fourth proportional to 19,021.68, 28,529.28 and 5,170.68 is: 7,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.68 : 28,529.28 = 5,170.68 : x
  2. Step 2: Convert to fraction form
    19,021.68/28,529.28 = 5,170.68/x
  3. Step 3: Cross multiply
    19,021.68x = 28,529.28 × 5,170.68
  4. Step 4: Simplify right side
    19,021.68x = 147,515,777.51
  5. Step 5: Solve for x
    x = 147,515,777.51/19,021.68
  6. Step 6: Final answer
    x = 7,755.14

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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.