Home / 20,889.60-31,325.22-9,800.16

Finding the Fourth Proportional to 20,889.60, 31,325.22 and 9,800.16

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Solution

The fourth proportional to 20,889.60, 31,325.22 and 9,800.16 is: 14,695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.60 : 31,325.22 = 9,800.16 : x
  2. Step 2: Convert to fraction form
    20,889.60/31,325.22 = 9,800.16/x
  3. Step 3: Cross multiply
    20,889.60x = 31,325.22 × 9,800.16
  4. Step 4: Simplify right side
    20,889.60x = 306,992,168.04
  5. Step 5: Solve for x
    x = 306,992,168.04/20,889.60
  6. Step 6: Final answer
    x = 14,695.93

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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.