Home / 21,218.56-29,281.63-11,659.06

Finding the Fourth Proportional to 21,218.56, 29,281.63 and 11,659.06

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Solution

The fourth proportional to 21,218.56, 29,281.63 and 11,659.06 is: 16,089.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.56 : 29,281.63 = 11,659.06 : x
  2. Step 2: Convert to fraction form
    21,218.56/29,281.63 = 11,659.06/x
  3. Step 3: Cross multiply
    21,218.56x = 29,281.63 × 11,659.06
  4. Step 4: Simplify right side
    21,218.56x = 341,396,281.07
  5. Step 5: Solve for x
    x = 341,396,281.07/21,218.56
  6. Step 6: Final answer
    x = 16,089.51

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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.