Home / 20,575.22-28,394.35-12,612.86

Finding the Fourth Proportional to 20,575.22, 28,394.35 and 12,612.86

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Solution

The fourth proportional to 20,575.22, 28,394.35 and 12,612.86 is: 17,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.22 : 28,394.35 = 12,612.86 : x
  2. Step 2: Convert to fraction form
    20,575.22/28,394.35 = 12,612.86/x
  3. Step 3: Cross multiply
    20,575.22x = 28,394.35 × 12,612.86
  4. Step 4: Simplify right side
    20,575.22x = 358,133,961.34
  5. Step 5: Solve for x
    x = 358,133,961.34/20,575.22
  6. Step 6: Final answer
    x = 17,406.08

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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.