Home / 21,176.76-29,223.95-11,745.39

Finding the Fourth Proportional to 21,176.76, 29,223.95 and 11,745.39

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Solution

The fourth proportional to 21,176.76, 29,223.95 and 11,745.39 is: 16,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.76 : 29,223.95 = 11,745.39 : x
  2. Step 2: Convert to fraction form
    21,176.76/29,223.95 = 11,745.39/x
  3. Step 3: Cross multiply
    21,176.76x = 29,223.95 × 11,745.39
  4. Step 4: Simplify right side
    21,176.76x = 343,246,631.36
  5. Step 5: Solve for x
    x = 343,246,631.36/21,176.76
  6. Step 6: Final answer
    x = 16,208.65

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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.