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Finding the Fourth Proportional to 30,390.54, 45,601.82 and 15,599.48

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Solution

The fourth proportional to 30,390.54, 45,601.82 and 15,599.48 is: 23,407.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.54 : 45,601.82 = 15,599.48 : x
  2. Step 2: Convert to fraction form
    30,390.54/45,601.82 = 15,599.48/x
  3. Step 3: Cross multiply
    30,390.54x = 45,601.82 × 15,599.48
  4. Step 4: Simplify right side
    30,390.54x = 711,364,373.05
  5. Step 5: Solve for x
    x = 711,364,373.05/30,390.54
  6. Step 6: Final answer
    x = 23,407.43

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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.