Home / 20,813.76-28,680.48-14,832.72

Finding the Fourth Proportional to 20,813.76, 28,680.48 and 14,832.72

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Solution

The fourth proportional to 20,813.76, 28,680.48 and 14,832.72 is: 20,438.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.76 : 28,680.48 = 14,832.72 : x
  2. Step 2: Convert to fraction form
    20,813.76/28,680.48 = 14,832.72/x
  3. Step 3: Cross multiply
    20,813.76x = 28,680.48 × 14,832.72
  4. Step 4: Simplify right side
    20,813.76x = 425,409,529.31
  5. Step 5: Solve for x
    x = 425,409,529.31/20,813.76
  6. Step 6: Final answer
    x = 20,438.86

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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.