Home / 28,709.28-43,001.59-13,887.12

Finding the Fourth Proportional to 28,709.28, 43,001.59 and 13,887.12

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Solution

The fourth proportional to 28,709.28, 43,001.59 and 13,887.12 is: 20,800.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.28 : 43,001.59 = 13,887.12 : x
  2. Step 2: Convert to fraction form
    28,709.28/43,001.59 = 13,887.12/x
  3. Step 3: Cross multiply
    28,709.28x = 43,001.59 × 13,887.12
  4. Step 4: Simplify right side
    28,709.28x = 597,168,171.09
  5. Step 5: Solve for x
    x = 597,168,171.09/28,709.28
  6. Step 6: Final answer
    x = 20,800.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.