Home / 28,181.32-38,891.10-15,607.24

Finding the Fourth Proportional to 28,181.32, 38,891.10 and 15,607.24

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Solution

The fourth proportional to 28,181.32, 38,891.10 and 15,607.24 is: 21,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.32 : 38,891.10 = 15,607.24 : x
  2. Step 2: Convert to fraction form
    28,181.32/38,891.10 = 15,607.24/x
  3. Step 3: Cross multiply
    28,181.32x = 38,891.10 × 15,607.24
  4. Step 4: Simplify right side
    28,181.32x = 606,982,731.56
  5. Step 5: Solve for x
    x = 606,982,731.56/28,181.32
  6. Step 6: Final answer
    x = 21,538.48

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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.