Home / 20,739.25-28,630.38-14,370.67

Finding the Fourth Proportional to 20,739.25, 28,630.38 and 14,370.67

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Solution

The fourth proportional to 20,739.25, 28,630.38 and 14,370.67 is: 19,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.25 : 28,630.38 = 14,370.67 : x
  2. Step 2: Convert to fraction form
    20,739.25/28,630.38 = 14,370.67/x
  3. Step 3: Cross multiply
    20,739.25x = 28,630.38 × 14,370.67
  4. Step 4: Simplify right side
    20,739.25x = 411,437,742.95
  5. Step 5: Solve for x
    x = 411,437,742.95/20,739.25
  6. Step 6: Final answer
    x = 19,838.60

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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.