Home / 28,129.82-38,812.37-17,511.93

Finding the Fourth Proportional to 28,129.82, 38,812.37 and 17,511.93

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Solution

The fourth proportional to 28,129.82, 38,812.37 and 17,511.93 is: 24,162.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.82 : 38,812.37 = 17,511.93 : x
  2. Step 2: Convert to fraction form
    28,129.82/38,812.37 = 17,511.93/x
  3. Step 3: Cross multiply
    28,129.82x = 38,812.37 × 17,511.93
  4. Step 4: Simplify right side
    28,129.82x = 679,679,419.01
  5. Step 5: Solve for x
    x = 679,679,419.01/28,129.82
  6. Step 6: Final answer
    x = 24,162.24

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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.