Home / 20,346.32-28,080.24-12,393.20

Finding the Fourth Proportional to 20,346.32, 28,080.24 and 12,393.20

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Solution

The fourth proportional to 20,346.32, 28,080.24 and 12,393.20 is: 17,104.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.32 : 28,080.24 = 12,393.20 : x
  2. Step 2: Convert to fraction form
    20,346.32/28,080.24 = 12,393.20/x
  3. Step 3: Cross multiply
    20,346.32x = 28,080.24 × 12,393.20
  4. Step 4: Simplify right side
    20,346.32x = 348,004,030.37
  5. Step 5: Solve for x
    x = 348,004,030.37/20,346.32
  6. Step 6: Final answer
    x = 17,104.03

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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.