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Finding the Fourth Proportional to 12,492.98, 18,742.18 and 4,173.74

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Solution

The fourth proportional to 12,492.98, 18,742.18 and 4,173.74 is: 6,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.98 : 18,742.18 = 4,173.74 : x
  2. Step 2: Convert to fraction form
    12,492.98/18,742.18 = 4,173.74/x
  3. Step 3: Cross multiply
    12,492.98x = 18,742.18 × 4,173.74
  4. Step 4: Simplify right side
    12,492.98x = 78,224,986.35
  5. Step 5: Solve for x
    x = 78,224,986.35/12,492.98
  6. Step 6: Final answer
    x = 6,261.52

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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.