Home / 20,434.40-30,645.84-8,760.32

Finding the Fourth Proportional to 20,434.40, 30,645.84 and 8,760.32

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Solution

The fourth proportional to 20,434.40, 30,645.84 and 8,760.32 is: 13,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.40 : 30,645.84 = 8,760.32 : x
  2. Step 2: Convert to fraction form
    20,434.40/30,645.84 = 8,760.32/x
  3. Step 3: Cross multiply
    20,434.40x = 30,645.84 × 8,760.32
  4. Step 4: Simplify right side
    20,434.40x = 268,467,365.07
  5. Step 5: Solve for x
    x = 268,467,365.07/20,434.40
  6. Step 6: Final answer
    x = 13,138.01

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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.