Home / 20,313.60-30,426.24-12,899.52

Finding the Fourth Proportional to 20,313.60, 30,426.24 and 12,899.52

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Solution

The fourth proportional to 20,313.60, 30,426.24 and 12,899.52 is: 19,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.60 : 30,426.24 = 12,899.52 : x
  2. Step 2: Convert to fraction form
    20,313.60/30,426.24 = 12,899.52/x
  3. Step 3: Cross multiply
    20,313.60x = 30,426.24 × 12,899.52
  4. Step 4: Simplify right side
    20,313.60x = 392,483,891.40
  5. Step 5: Solve for x
    x = 392,483,891.40/20,313.60
  6. Step 6: Final answer
    x = 19,321.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.