Home / 28,181.18-38,916.37-18,127.08

Finding the Fourth Proportional to 28,181.18, 38,916.37 and 18,127.08

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Solution

The fourth proportional to 28,181.18, 38,916.37 and 18,127.08 is: 25,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.18 : 38,916.37 = 18,127.08 : x
  2. Step 2: Convert to fraction form
    28,181.18/38,916.37 = 18,127.08/x
  3. Step 3: Cross multiply
    28,181.18x = 38,916.37 × 18,127.08
  4. Step 4: Simplify right side
    28,181.18x = 705,440,171.21
  5. Step 5: Solve for x
    x = 705,440,171.21/28,181.18
  6. Step 6: Final answer
    x = 25,032.31

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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.