Home / 20,532.08-28,338.81-13,349.50

Finding the Fourth Proportional to 20,532.08, 28,338.81 and 13,349.50

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Solution

The fourth proportional to 20,532.08, 28,338.81 and 13,349.50 is: 18,425.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.08 : 28,338.81 = 13,349.50 : x
  2. Step 2: Convert to fraction form
    20,532.08/28,338.81 = 13,349.50/x
  3. Step 3: Cross multiply
    20,532.08x = 28,338.81 × 13,349.50
  4. Step 4: Simplify right side
    20,532.08x = 378,308,944.10
  5. Step 5: Solve for x
    x = 378,308,944.10/20,532.08
  6. Step 6: Final answer
    x = 18,425.26

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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.