Home / 21,521.54-29,699.51-11,961.46

Finding the Fourth Proportional to 21,521.54, 29,699.51 and 11,961.46

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Solution

The fourth proportional to 21,521.54, 29,699.51 and 11,961.46 is: 16,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.54 : 29,699.51 = 11,961.46 : x
  2. Step 2: Convert to fraction form
    21,521.54/29,699.51 = 11,961.46/x
  3. Step 3: Cross multiply
    21,521.54x = 29,699.51 × 11,961.46
  4. Step 4: Simplify right side
    21,521.54x = 355,249,500.88
  5. Step 5: Solve for x
    x = 355,249,500.88/21,521.54
  6. Step 6: Final answer
    x = 16,506.70

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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.