Home / 20,328.35-28,053.99-12,568.86

Finding the Fourth Proportional to 20,328.35, 28,053.99 and 12,568.86

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Solution

The fourth proportional to 20,328.35, 28,053.99 and 12,568.86 is: 17,345.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.35 : 28,053.99 = 12,568.86 : x
  2. Step 2: Convert to fraction form
    20,328.35/28,053.99 = 12,568.86/x
  3. Step 3: Cross multiply
    20,328.35x = 28,053.99 × 12,568.86
  4. Step 4: Simplify right side
    20,328.35x = 352,606,672.75
  5. Step 5: Solve for x
    x = 352,606,672.75/20,328.35
  6. Step 6: Final answer
    x = 17,345.57

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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.