Home / 28,018-38,664.96-15,442.48

Finding the Fourth Proportional to 28,018, 38,664.96 and 15,442.48

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Solution

The fourth proportional to 28,018, 38,664.96 and 15,442.48 is: 21,310.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018 : 38,664.96 = 15,442.48 : x
  2. Step 2: Convert to fraction form
    28,018/38,664.96 = 15,442.48/x
  3. Step 3: Cross multiply
    28,018x = 38,664.96 × 15,442.48
  4. Step 4: Simplify right side
    28,018x = 597,082,871.50
  5. Step 5: Solve for x
    x = 597,082,871.50/28,018
  6. Step 6: Final answer
    x = 21,310.69

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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.