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Finding the Fourth Proportional to 30,485.42, 45,726.91 and 11,757.42

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Solution

The fourth proportional to 30,485.42, 45,726.91 and 11,757.42 is: 17,635.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.42 : 45,726.91 = 11,757.42 : x
  2. Step 2: Convert to fraction form
    30,485.42/45,726.91 = 11,757.42/x
  3. Step 3: Cross multiply
    30,485.42x = 45,726.91 × 11,757.42
  4. Step 4: Simplify right side
    30,485.42x = 537,630,486.17
  5. Step 5: Solve for x
    x = 537,630,486.17/30,485.42
  6. Step 6: Final answer
    x = 17,635.66

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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.