Home / 30,215.86-45,308.22-13,561.61

Finding the Fourth Proportional to 30,215.86, 45,308.22 and 13,561.61

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Solution

The fourth proportional to 30,215.86, 45,308.22 and 13,561.61 is: 20,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.86 : 45,308.22 = 13,561.61 : x
  2. Step 2: Convert to fraction form
    30,215.86/45,308.22 = 13,561.61/x
  3. Step 3: Cross multiply
    30,215.86x = 45,308.22 × 13,561.61
  4. Step 4: Simplify right side
    30,215.86x = 614,452,409.43
  5. Step 5: Solve for x
    x = 614,452,409.43/30,215.86
  6. Step 6: Final answer
    x = 20,335.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.