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Finding the Fourth Proportional to 15,757.83, 21,742.61 and 9,045.63

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Solution

The fourth proportional to 15,757.83, 21,742.61 and 9,045.63 is: 12,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.83 : 21,742.61 = 9,045.63 : x
  2. Step 2: Convert to fraction form
    15,757.83/21,742.61 = 9,045.63/x
  3. Step 3: Cross multiply
    15,757.83x = 21,742.61 × 9,045.63
  4. Step 4: Simplify right side
    15,757.83x = 196,675,560.07
  5. Step 5: Solve for x
    x = 196,675,560.07/15,757.83
  6. Step 6: Final answer
    x = 12,481.13

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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.