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Finding the Fourth Proportional to 30,170.44, 45,246.06 and 12,637

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Solution

The fourth proportional to 30,170.44, 45,246.06 and 12,637 is: 18,951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,170.44 : 45,246.06 = 12,637 : x
  2. Step 2: Convert to fraction form
    30,170.44/45,246.06 = 12,637/x
  3. Step 3: Cross multiply
    30,170.44x = 45,246.06 × 12,637
  4. Step 4: Simplify right side
    30,170.44x = 571,774,460.22
  5. Step 5: Solve for x
    x = 571,774,460.22/30,170.44
  6. Step 6: Final answer
    x = 18,951.48

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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.