Home / 14,118.40-21,134.40-12,563.20

Finding the Fourth Proportional to 14,118.40, 21,134.40 and 12,563.20

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Solution

The fourth proportional to 14,118.40, 21,134.40 and 12,563.20 is: 18,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.40 : 21,134.40 = 12,563.20 : x
  2. Step 2: Convert to fraction form
    14,118.40/21,134.40 = 12,563.20/x
  3. Step 3: Cross multiply
    14,118.40x = 21,134.40 × 12,563.20
  4. Step 4: Simplify right side
    14,118.40x = 265,515,694.08
  5. Step 5: Solve for x
    x = 265,515,694.08/14,118.40
  6. Step 6: Final answer
    x = 18,806.36

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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.