Home / 20,697.67-28,568.82-13,528.63

Finding the Fourth Proportional to 20,697.67, 28,568.82 and 13,528.63

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Solution

The fourth proportional to 20,697.67, 28,568.82 and 13,528.63 is: 18,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.67 : 28,568.82 = 13,528.63 : x
  2. Step 2: Convert to fraction form
    20,697.67/28,568.82 = 13,528.63/x
  3. Step 3: Cross multiply
    20,697.67x = 28,568.82 × 13,528.63
  4. Step 4: Simplify right side
    20,697.67x = 386,496,995.32
  5. Step 5: Solve for x
    x = 386,496,995.32/20,697.67
  6. Step 6: Final answer
    x = 18,673.45

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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.