Home / 20,635.52-30,950.40-6,782.72

Finding the Fourth Proportional to 20,635.52, 30,950.40 and 6,782.72

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Solution

The fourth proportional to 20,635.52, 30,950.40 and 6,782.72 is: 10,173.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.52 : 30,950.40 = 6,782.72 : x
  2. Step 2: Convert to fraction form
    20,635.52/30,950.40 = 6,782.72/x
  3. Step 3: Cross multiply
    20,635.52x = 30,950.40 × 6,782.72
  4. Step 4: Simplify right side
    20,635.52x = 209,927,897.09
  5. Step 5: Solve for x
    x = 209,927,897.09/20,635.52
  6. Step 6: Final answer
    x = 10,173.13

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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.