Home / 14,044.48-21,040.80-12,489.28

Finding the Fourth Proportional to 14,044.48, 21,040.80 and 12,489.28

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Solution

The fourth proportional to 14,044.48, 21,040.80 and 12,489.28 is: 18,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,044.48 : 21,040.80 = 12,489.28 : x
  2. Step 2: Convert to fraction form
    14,044.48/21,040.80 = 12,489.28/x
  3. Step 3: Cross multiply
    14,044.48x = 21,040.80 × 12,489.28
  4. Step 4: Simplify right side
    14,044.48x = 262,784,442.62
  5. Step 5: Solve for x
    x = 262,784,442.62/14,044.48
  6. Step 6: Final answer
    x = 18,710.87

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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.