Home / 21,117.26-29,134.41-13,152.89

Finding the Fourth Proportional to 21,117.26, 29,134.41 and 13,152.89

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Solution

The fourth proportional to 21,117.26, 29,134.41 and 13,152.89 is: 18,146.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.26 : 29,134.41 = 13,152.89 : x
  2. Step 2: Convert to fraction form
    21,117.26/29,134.41 = 13,152.89/x
  3. Step 3: Cross multiply
    21,117.26x = 29,134.41 × 13,152.89
  4. Step 4: Simplify right side
    21,117.26x = 383,201,689.94
  5. Step 5: Solve for x
    x = 383,201,689.94/21,117.26
  6. Step 6: Final answer
    x = 18,146.37

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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.