Home / 21,247.12-29,320.25-11,686.93

Finding the Fourth Proportional to 21,247.12, 29,320.25 and 11,686.93

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Solution

The fourth proportional to 21,247.12, 29,320.25 and 11,686.93 is: 16,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.12 : 29,320.25 = 11,686.93 : x
  2. Step 2: Convert to fraction form
    21,247.12/29,320.25 = 11,686.93/x
  3. Step 3: Cross multiply
    21,247.12x = 29,320.25 × 11,686.93
  4. Step 4: Simplify right side
    21,247.12x = 342,663,709.33
  5. Step 5: Solve for x
    x = 342,663,709.33/21,247.12
  6. Step 6: Final answer
    x = 16,127.54

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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.