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Finding the Fourth Proportional to 18,773.66, 28,141.86 and 10,457.48

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Solution

The fourth proportional to 18,773.66, 28,141.86 and 10,457.48 is: 15,675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.66 : 28,141.86 = 10,457.48 : x
  2. Step 2: Convert to fraction form
    18,773.66/28,141.86 = 10,457.48/x
  3. Step 3: Cross multiply
    18,773.66x = 28,141.86 × 10,457.48
  4. Step 4: Simplify right side
    18,773.66x = 294,292,938.11
  5. Step 5: Solve for x
    x = 294,292,938.11/18,773.66
  6. Step 6: Final answer
    x = 15,675.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.