Home / 20,875.39-28,784.86-16,084.64

Finding the Fourth Proportional to 20,875.39, 28,784.86 and 16,084.64

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Solution

The fourth proportional to 20,875.39, 28,784.86 and 16,084.64 is: 22,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.39 : 28,784.86 = 16,084.64 : x
  2. Step 2: Convert to fraction form
    20,875.39/28,784.86 = 16,084.64/x
  3. Step 3: Cross multiply
    20,875.39x = 28,784.86 × 16,084.64
  4. Step 4: Simplify right side
    20,875.39x = 462,994,142.30
  5. Step 5: Solve for x
    x = 462,994,142.30/20,875.39
  6. Step 6: Final answer
    x = 22,178.95

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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.