Home / 28,516.89-39,334.77-18,291.74

Finding the Fourth Proportional to 28,516.89, 39,334.77 and 18,291.74

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Solution

The fourth proportional to 28,516.89, 39,334.77 and 18,291.74 is: 25,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.89 : 39,334.77 = 18,291.74 : x
  2. Step 2: Convert to fraction form
    28,516.89/39,334.77 = 18,291.74/x
  3. Step 3: Cross multiply
    28,516.89x = 39,334.77 × 18,291.74
  4. Step 4: Simplify right side
    28,516.89x = 719,501,189.13
  5. Step 5: Solve for x
    x = 719,501,189.13/28,516.89
  6. Step 6: Final answer
    x = 25,230.70

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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.