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Finding the Fourth Proportional to 30,458.61, 45,675.79 and 11,728.27

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Solution

The fourth proportional to 30,458.61, 45,675.79 and 11,728.27 is: 17,587.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.61 : 45,675.79 = 11,728.27 : x
  2. Step 2: Convert to fraction form
    30,458.61/45,675.79 = 11,728.27/x
  3. Step 3: Cross multiply
    30,458.61x = 45,675.79 × 11,728.27
  4. Step 4: Simplify right side
    30,458.61x = 535,697,997.58
  5. Step 5: Solve for x
    x = 535,697,997.58/30,458.61
  6. Step 6: Final answer
    x = 17,587.74

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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.