Home / 20,887.28-28,807.62-18,364.04

Finding the Fourth Proportional to 20,887.28, 28,807.62 and 18,364.04

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Solution

The fourth proportional to 20,887.28, 28,807.62 and 18,364.04 is: 25,327.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.28 : 28,807.62 = 18,364.04 : x
  2. Step 2: Convert to fraction form
    20,887.28/28,807.62 = 18,364.04/x
  3. Step 3: Cross multiply
    20,887.28x = 28,807.62 × 18,364.04
  4. Step 4: Simplify right side
    20,887.28x = 529,024,285.98
  5. Step 5: Solve for x
    x = 529,024,285.98/20,887.28
  6. Step 6: Final answer
    x = 25,327.58

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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.