Home / 20,570.30-28,385.37-11,618.67

Finding the Fourth Proportional to 20,570.30, 28,385.37 and 11,618.67

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Solution

The fourth proportional to 20,570.30, 28,385.37 and 11,618.67 is: 16,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,570.30 : 28,385.37 = 11,618.67 : x
  2. Step 2: Convert to fraction form
    20,570.30/28,385.37 = 11,618.67/x
  3. Step 3: Cross multiply
    20,570.30x = 28,385.37 × 11,618.67
  4. Step 4: Simplify right side
    20,570.30x = 329,800,246.86
  5. Step 5: Solve for x
    x = 329,800,246.86/20,570.30
  6. Step 6: Final answer
    x = 16,032.84

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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.