Home / 21,326.09-29,442.03-14,789.39

Finding the Fourth Proportional to 21,326.09, 29,442.03 and 14,789.39

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Solution

The fourth proportional to 21,326.09, 29,442.03 and 14,789.39 is: 20,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.09 : 29,442.03 = 14,789.39 : x
  2. Step 2: Convert to fraction form
    21,326.09/29,442.03 = 14,789.39/x
  3. Step 3: Cross multiply
    21,326.09x = 29,442.03 × 14,789.39
  4. Step 4: Simplify right side
    21,326.09x = 435,429,516.85
  5. Step 5: Solve for x
    x = 435,429,516.85/21,326.09
  6. Step 6: Final answer
    x = 20,417.70

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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.