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Finding the Fourth Proportional to 30,268.47, 45,411.96 and 15,487.89

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Solution

The fourth proportional to 30,268.47, 45,411.96 and 15,487.89 is: 23,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,268.47 : 45,411.96 = 15,487.89 : x
  2. Step 2: Convert to fraction form
    30,268.47/45,411.96 = 15,487.89/x
  3. Step 3: Cross multiply
    30,268.47x = 45,411.96 × 15,487.89
  4. Step 4: Simplify right side
    30,268.47x = 703,335,441.16
  5. Step 5: Solve for x
    x = 703,335,441.16/30,268.47
  6. Step 6: Final answer
    x = 23,236.57

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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.