Home / 20,505.15-28,263.87-16,021.08

Finding the Fourth Proportional to 20,505.15, 28,263.87 and 16,021.08

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Solution

The fourth proportional to 20,505.15, 28,263.87 and 16,021.08 is: 22,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.15 : 28,263.87 = 16,021.08 : x
  2. Step 2: Convert to fraction form
    20,505.15/28,263.87 = 16,021.08/x
  3. Step 3: Cross multiply
    20,505.15x = 28,263.87 × 16,021.08
  4. Step 4: Simplify right side
    20,505.15x = 452,817,722.38
  5. Step 5: Solve for x
    x = 452,817,722.38/20,505.15
  6. Step 6: Final answer
    x = 22,083.12

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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.