Home / 21,260.26-29,329.34-13,709.02

Finding the Fourth Proportional to 21,260.26, 29,329.34 and 13,709.02

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Solution

The fourth proportional to 21,260.26, 29,329.34 and 13,709.02 is: 18,912.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.26 : 29,329.34 = 13,709.02 : x
  2. Step 2: Convert to fraction form
    21,260.26/29,329.34 = 13,709.02/x
  3. Step 3: Cross multiply
    21,260.26x = 29,329.34 × 13,709.02
  4. Step 4: Simplify right side
    21,260.26x = 402,076,508.65
  5. Step 5: Solve for x
    x = 402,076,508.65/21,260.26
  6. Step 6: Final answer
    x = 18,912.12

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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.