Home / 20,585.32-28,408.27-12,631.94

Finding the Fourth Proportional to 20,585.32, 28,408.27 and 12,631.94

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Solution

The fourth proportional to 20,585.32, 28,408.27 and 12,631.94 is: 17,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.32 : 28,408.27 = 12,631.94 : x
  2. Step 2: Convert to fraction form
    20,585.32/28,408.27 = 12,631.94/x
  3. Step 3: Cross multiply
    20,585.32x = 28,408.27 × 12,631.94
  4. Step 4: Simplify right side
    20,585.32x = 358,851,562.14
  5. Step 5: Solve for x
    x = 358,851,562.14/20,585.32
  6. Step 6: Final answer
    x = 17,432.40

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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.