Home / 20,415.76-30,623.37-9,886.72

Finding the Fourth Proportional to 20,415.76, 30,623.37 and 9,886.72

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Solution

The fourth proportional to 20,415.76, 30,623.37 and 9,886.72 is: 14,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.76 : 30,623.37 = 9,886.72 : x
  2. Step 2: Convert to fraction form
    20,415.76/30,623.37 = 9,886.72/x
  3. Step 3: Cross multiply
    20,415.76x = 30,623.37 × 9,886.72
  4. Step 4: Simplify right side
    20,415.76x = 302,764,684.65
  5. Step 5: Solve for x
    x = 302,764,684.65/20,415.76
  6. Step 6: Final answer
    x = 14,829.95

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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.