Home / 20,387.64-30,584.50-7,238.92

Finding the Fourth Proportional to 20,387.64, 30,584.50 and 7,238.92

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Solution

The fourth proportional to 20,387.64, 30,584.50 and 7,238.92 is: 10,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.64 : 30,584.50 = 7,238.92 : x
  2. Step 2: Convert to fraction form
    20,387.64/30,584.50 = 7,238.92/x
  3. Step 3: Cross multiply
    20,387.64x = 30,584.50 × 7,238.92
  4. Step 4: Simplify right side
    20,387.64x = 221,398,748.74
  5. Step 5: Solve for x
    x = 221,398,748.74/20,387.64
  6. Step 6: Final answer
    x = 10,859.46

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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.