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Finding the Fourth Proportional to 28,010.96, 38,654.62 and 15,264.25

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Solution

The fourth proportional to 28,010.96, 38,654.62 and 15,264.25 is: 21,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.96 : 38,654.62 = 15,264.25 : x
  2. Step 2: Convert to fraction form
    28,010.96/38,654.62 = 15,264.25/x
  3. Step 3: Cross multiply
    28,010.96x = 38,654.62 × 15,264.25
  4. Step 4: Simplify right side
    28,010.96x = 590,033,783.34
  5. Step 5: Solve for x
    x = 590,033,783.34/28,010.96
  6. Step 6: Final answer
    x = 21,064.39

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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.