Home / 28,704.78-39,613.77-16,129.50

Finding the Fourth Proportional to 28,704.78, 39,613.77 and 16,129.50

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Solution

The fourth proportional to 28,704.78, 39,613.77 and 16,129.50 is: 22,259.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.78 : 39,613.77 = 16,129.50 : x
  2. Step 2: Convert to fraction form
    28,704.78/39,613.77 = 16,129.50/x
  3. Step 3: Cross multiply
    28,704.78x = 39,613.77 × 16,129.50
  4. Step 4: Simplify right side
    28,704.78x = 638,950,303.22
  5. Step 5: Solve for x
    x = 638,950,303.22/28,704.78
  6. Step 6: Final answer
    x = 22,259.37

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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.