Home / 14,246.40-21,326.40-12,691.20

Finding the Fourth Proportional to 14,246.40, 21,326.40 and 12,691.20

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Solution

The fourth proportional to 14,246.40, 21,326.40 and 12,691.20 is: 18,998.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,246.40 : 21,326.40 = 12,691.20 : x
  2. Step 2: Convert to fraction form
    14,246.40/21,326.40 = 12,691.20/x
  3. Step 3: Cross multiply
    14,246.40x = 21,326.40 × 12,691.20
  4. Step 4: Simplify right side
    14,246.40x = 270,657,607.68
  5. Step 5: Solve for x
    x = 270,657,607.68/14,246.40
  6. Step 6: Final answer
    x = 18,998.32

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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.