Home / 20,440.43-28,189.60-13,263.50

Finding the Fourth Proportional to 20,440.43, 28,189.60 and 13,263.50

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Solution

The fourth proportional to 20,440.43, 28,189.60 and 13,263.50 is: 18,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.43 : 28,189.60 = 13,263.50 : x
  2. Step 2: Convert to fraction form
    20,440.43/28,189.60 = 13,263.50/x
  3. Step 3: Cross multiply
    20,440.43x = 28,189.60 × 13,263.50
  4. Step 4: Simplify right side
    20,440.43x = 373,892,585.49
  5. Step 5: Solve for x
    x = 373,892,585.49/20,440.43
  6. Step 6: Final answer
    x = 18,291.81

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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.