Home / 20,293.91-28,008.86-12,741.32

Finding the Fourth Proportional to 20,293.91, 28,008.86 and 12,741.32

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Solution

The fourth proportional to 20,293.91, 28,008.86 and 12,741.32 is: 17,585.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.91 : 28,008.86 = 12,741.32 : x
  2. Step 2: Convert to fraction form
    20,293.91/28,008.86 = 12,741.32/x
  3. Step 3: Cross multiply
    20,293.91x = 28,008.86 × 12,741.32
  4. Step 4: Simplify right side
    20,293.91x = 356,869,696.86
  5. Step 5: Solve for x
    x = 356,869,696.86/20,293.91
  6. Step 6: Final answer
    x = 17,585.06

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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.