Home / 38,538.18-53,178.41-21,771.18

Finding the Fourth Proportional to 38,538.18, 53,178.41 and 21,771.18

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Solution

The fourth proportional to 38,538.18, 53,178.41 and 21,771.18 is: 30,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,538.18 : 53,178.41 = 21,771.18 : x
  2. Step 2: Convert to fraction form
    38,538.18/53,178.41 = 21,771.18/x
  3. Step 3: Cross multiply
    38,538.18x = 53,178.41 × 21,771.18
  4. Step 4: Simplify right side
    38,538.18x = 1,157,756,627.37
  5. Step 5: Solve for x
    x = 1,157,756,627.37/38,538.18
  6. Step 6: Final answer
    x = 30,041.81

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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.