Home / 20,434.88-28,200.35-11,482.56

Finding the Fourth Proportional to 20,434.88, 28,200.35 and 11,482.56

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Solution

The fourth proportional to 20,434.88, 28,200.35 and 11,482.56 is: 15,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.88 : 28,200.35 = 11,482.56 : x
  2. Step 2: Convert to fraction form
    20,434.88/28,200.35 = 11,482.56/x
  3. Step 3: Cross multiply
    20,434.88x = 28,200.35 × 11,482.56
  4. Step 4: Simplify right side
    20,434.88x = 323,812,239.60
  5. Step 5: Solve for x
    x = 323,812,239.60/20,434.88
  6. Step 6: Final answer
    x = 15,846.05

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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.