Home / 21,326.20-29,442.21-14,789.50

Finding the Fourth Proportional to 21,326.20, 29,442.21 and 14,789.50

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Solution

The fourth proportional to 21,326.20, 29,442.21 and 14,789.50 is: 20,417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.20 : 29,442.21 = 14,789.50 : x
  2. Step 2: Convert to fraction form
    21,326.20/29,442.21 = 14,789.50/x
  3. Step 3: Cross multiply
    21,326.20x = 29,442.21 × 14,789.50
  4. Step 4: Simplify right side
    21,326.20x = 435,435,564.80
  5. Step 5: Solve for x
    x = 435,435,564.80/21,326.20
  6. Step 6: Final answer
    x = 20,417.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.