Home / 14,125.40-21,188.10-12,861.80

Finding the Fourth Proportional to 14,125.40, 21,188.10 and 12,861.80

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Solution

The fourth proportional to 14,125.40, 21,188.10 and 12,861.80 is: 19,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,125.40 : 21,188.10 = 12,861.80 : x
  2. Step 2: Convert to fraction form
    14,125.40/21,188.10 = 12,861.80/x
  3. Step 3: Cross multiply
    14,125.40x = 21,188.10 × 12,861.80
  4. Step 4: Simplify right side
    14,125.40x = 272,517,104.58
  5. Step 5: Solve for x
    x = 272,517,104.58/14,125.40
  6. Step 6: Final answer
    x = 19,292.70

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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.