Home / 20,857.63-28,814.12-16,904.83

Finding the Fourth Proportional to 20,857.63, 28,814.12 and 16,904.83

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Solution

The fourth proportional to 20,857.63, 28,814.12 and 16,904.83 is: 23,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857.63 : 28,814.12 = 16,904.83 : x
  2. Step 2: Convert to fraction form
    20,857.63/28,814.12 = 16,904.83/x
  3. Step 3: Cross multiply
    20,857.63x = 28,814.12 × 16,904.83
  4. Step 4: Simplify right side
    20,857.63x = 487,097,715.68
  5. Step 5: Solve for x
    x = 487,097,715.68/20,857.63
  6. Step 6: Final answer
    x = 23,353.45

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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.