Home / 21,378.52-32,072.84-7,338.72

Finding the Fourth Proportional to 21,378.52, 32,072.84 and 7,338.72

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Solution

The fourth proportional to 21,378.52, 32,072.84 and 7,338.72 is: 11,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.52 : 32,072.84 = 7,338.72 : x
  2. Step 2: Convert to fraction form
    21,378.52/32,072.84 = 7,338.72/x
  3. Step 3: Cross multiply
    21,378.52x = 32,072.84 × 7,338.72
  4. Step 4: Simplify right side
    21,378.52x = 235,373,592.36
  5. Step 5: Solve for x
    x = 235,373,592.36/21,378.52
  6. Step 6: Final answer
    x = 11,009.82

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1.5x scale

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.