Home / 14,115.40-21,173.10-12,851.80

Finding the Fourth Proportional to 14,115.40, 21,173.10 and 12,851.80

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Solution

The fourth proportional to 14,115.40, 21,173.10 and 12,851.80 is: 19,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.40 : 21,173.10 = 12,851.80 : x
  2. Step 2: Convert to fraction form
    14,115.40/21,173.10 = 12,851.80/x
  3. Step 3: Cross multiply
    14,115.40x = 21,173.10 × 12,851.80
  4. Step 4: Simplify right side
    14,115.40x = 272,112,446.58
  5. Step 5: Solve for x
    x = 272,112,446.58/14,115.40
  6. Step 6: Final answer
    x = 19,277.70

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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.