Home / 21,325.42-29,432.22-13,789.39

Finding the Fourth Proportional to 21,325.42, 29,432.22 and 13,789.39

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Solution

The fourth proportional to 21,325.42, 29,432.22 and 13,789.39 is: 19,031.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.42 : 29,432.22 = 13,789.39 : x
  2. Step 2: Convert to fraction form
    21,325.42/29,432.22 = 13,789.39/x
  3. Step 3: Cross multiply
    21,325.42x = 29,432.22 × 13,789.39
  4. Step 4: Simplify right side
    21,325.42x = 405,852,360.15
  5. Step 5: Solve for x
    x = 405,852,360.15/21,325.42
  6. Step 6: Final answer
    x = 19,031.39

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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.