Home / 28,145.22-38,840.52-15,398.16

Finding the Fourth Proportional to 28,145.22, 38,840.52 and 15,398.16

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Solution

The fourth proportional to 28,145.22, 38,840.52 and 15,398.16 is: 21,249.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.22 : 38,840.52 = 15,398.16 : x
  2. Step 2: Convert to fraction form
    28,145.22/38,840.52 = 15,398.16/x
  3. Step 3: Cross multiply
    28,145.22x = 38,840.52 × 15,398.16
  4. Step 4: Simplify right side
    28,145.22x = 598,072,541.44
  5. Step 5: Solve for x
    x = 598,072,541.44/28,145.22
  6. Step 6: Final answer
    x = 21,249.52

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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.