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Finding the Fourth Proportional to 43,492.60, 65,238.90 and 12,328.12

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Solution

The fourth proportional to 43,492.60, 65,238.90 and 12,328.12 is: 18,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,492.60 : 65,238.90 = 12,328.12 : x
  2. Step 2: Convert to fraction form
    43,492.60/65,238.90 = 12,328.12/x
  3. Step 3: Cross multiply
    43,492.60x = 65,238.90 × 12,328.12
  4. Step 4: Simplify right side
    43,492.60x = 804,272,987.87
  5. Step 5: Solve for x
    x = 804,272,987.87/43,492.60
  6. Step 6: Final answer
    x = 18,492.18

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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.