Home / 28,386.76-42,536.34-17,976.64

Finding the Fourth Proportional to 28,386.76, 42,536.34 and 17,976.64

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Solution

The fourth proportional to 28,386.76, 42,536.34 and 17,976.64 is: 26,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.76 : 42,536.34 = 17,976.64 : x
  2. Step 2: Convert to fraction form
    28,386.76/42,536.34 = 17,976.64/x
  3. Step 3: Cross multiply
    28,386.76x = 42,536.34 × 17,976.64
  4. Step 4: Simplify right side
    28,386.76x = 764,660,471.10
  5. Step 5: Solve for x
    x = 764,660,471.10/28,386.76
  6. Step 6: Final answer
    x = 26,937.22

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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.