Home / 20,485.96-28,278.55-16,011.15

Finding the Fourth Proportional to 20,485.96, 28,278.55 and 16,011.15

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Solution

The fourth proportional to 20,485.96, 28,278.55 and 16,011.15 is: 22,101.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.96 : 28,278.55 = 16,011.15 : x
  2. Step 2: Convert to fraction form
    20,485.96/28,278.55 = 16,011.15/x
  3. Step 3: Cross multiply
    20,485.96x = 28,278.55 × 16,011.15
  4. Step 4: Simplify right side
    20,485.96x = 452,771,964.44
  5. Step 5: Solve for x
    x = 452,771,964.44/20,485.96
  6. Step 6: Final answer
    x = 22,101.58

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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.