Home / 30,688.26-42,327.12-18,741.77

Finding the Fourth Proportional to 30,688.26, 42,327.12 and 18,741.77

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Solution

The fourth proportional to 30,688.26, 42,327.12 and 18,741.77 is: 25,849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.26 : 42,327.12 = 18,741.77 : x
  2. Step 2: Convert to fraction form
    30,688.26/42,327.12 = 18,741.77/x
  3. Step 3: Cross multiply
    30,688.26x = 42,327.12 × 18,741.77
  4. Step 4: Simplify right side
    30,688.26x = 793,285,147.80
  5. Step 5: Solve for x
    x = 793,285,147.80/30,688.26
  6. Step 6: Final answer
    x = 25,849.79

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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.