Home / 28,703.56-39,610.14-16,129.12

Finding the Fourth Proportional to 28,703.56, 39,610.14 and 16,129.12

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Solution

The fourth proportional to 28,703.56, 39,610.14 and 16,129.12 is: 22,257.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.56 : 39,610.14 = 16,129.12 : x
  2. Step 2: Convert to fraction form
    28,703.56/39,610.14 = 16,129.12/x
  3. Step 3: Cross multiply
    28,703.56x = 39,610.14 × 16,129.12
  4. Step 4: Simplify right side
    28,703.56x = 638,876,701.28
  5. Step 5: Solve for x
    x = 638,876,701.28/28,703.56
  6. Step 6: Final answer
    x = 22,257.75

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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.