Home / 20,135.43-30,203.45-6,988.23

Finding the Fourth Proportional to 20,135.43, 30,203.45 and 6,988.23

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Solution

The fourth proportional to 20,135.43, 30,203.45 and 6,988.23 is: 10,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.43 : 30,203.45 = 6,988.23 : x
  2. Step 2: Convert to fraction form
    20,135.43/30,203.45 = 6,988.23/x
  3. Step 3: Cross multiply
    20,135.43x = 30,203.45 × 6,988.23
  4. Step 4: Simplify right side
    20,135.43x = 211,068,620.45
  5. Step 5: Solve for x
    x = 211,068,620.45/20,135.43
  6. Step 6: Final answer
    x = 10,482.45

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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.