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Finding the Fourth Proportional to 28,327, 39,093.68 and 15,754.20

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Solution

The fourth proportional to 28,327, 39,093.68 and 15,754.20 is: 21,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,327 : 39,093.68 = 15,754.20 : x
  2. Step 2: Convert to fraction form
    28,327/39,093.68 = 15,754.20/x
  3. Step 3: Cross multiply
    28,327x = 39,093.68 × 15,754.20
  4. Step 4: Simplify right side
    28,327x = 615,889,653.46
  5. Step 5: Solve for x
    x = 615,889,653.46/28,327
  6. Step 6: Final answer
    x = 21,742.14

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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.