Home / 20,459.51-28,229.88-11,959.99

Finding the Fourth Proportional to 20,459.51, 28,229.88 and 11,959.99

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Solution

The fourth proportional to 20,459.51, 28,229.88 and 11,959.99 is: 16,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.51 : 28,229.88 = 11,959.99 : x
  2. Step 2: Convert to fraction form
    20,459.51/28,229.88 = 11,959.99/x
  3. Step 3: Cross multiply
    20,459.51x = 28,229.88 × 11,959.99
  4. Step 4: Simplify right side
    20,459.51x = 337,629,056.78
  5. Step 5: Solve for x
    x = 337,629,056.78/20,459.51
  6. Step 6: Final answer
    x = 16,502.31

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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.