Home / 26,540.48-36,639.96-20,558.72

Finding the Fourth Proportional to 26,540.48, 36,639.96 and 20,558.72

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Solution

The fourth proportional to 26,540.48, 36,639.96 and 20,558.72 is: 28,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,540.48 : 36,639.96 = 20,558.72 : x
  2. Step 2: Convert to fraction form
    26,540.48/36,639.96 = 20,558.72/x
  3. Step 3: Cross multiply
    26,540.48x = 36,639.96 × 20,558.72
  4. Step 4: Simplify right side
    26,540.48x = 753,270,678.45
  5. Step 5: Solve for x
    x = 753,270,678.45/26,540.48
  6. Step 6: Final answer
    x = 28,381.95

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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.