Home / 21,140.19-29,173.91-11,708.75

Finding the Fourth Proportional to 21,140.19, 29,173.91 and 11,708.75

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Solution

The fourth proportional to 21,140.19, 29,173.91 and 11,708.75 is: 16,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.19 : 29,173.91 = 11,708.75 : x
  2. Step 2: Convert to fraction form
    21,140.19/29,173.91 = 11,708.75/x
  3. Step 3: Cross multiply
    21,140.19x = 29,173.91 × 11,708.75
  4. Step 4: Simplify right side
    21,140.19x = 341,590,033.10
  5. Step 5: Solve for x
    x = 341,590,033.10/21,140.19
  6. Step 6: Final answer
    x = 16,158.32

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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.