Home / 28,659.09-39,549.53-16,720.12

Finding the Fourth Proportional to 28,659.09, 39,549.53 and 16,720.12

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Solution

The fourth proportional to 28,659.09, 39,549.53 and 16,720.12 is: 23,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.09 : 39,549.53 = 16,720.12 : x
  2. Step 2: Convert to fraction form
    28,659.09/39,549.53 = 16,720.12/x
  3. Step 3: Cross multiply
    28,659.09x = 39,549.53 × 16,720.12
  4. Step 4: Simplify right side
    28,659.09x = 661,272,887.54
  5. Step 5: Solve for x
    x = 661,272,887.54/28,659.09
  6. Step 6: Final answer
    x = 23,073.76

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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.