Home / 9,989.28-14,973.60-4,790.88

Finding the Fourth Proportional to 9,989.28, 14,973.60 and 4,790.88

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Solution

The fourth proportional to 9,989.28, 14,973.60 and 4,790.88 is: 7,181.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.28 : 14,973.60 = 4,790.88 : x
  2. Step 2: Convert to fraction form
    9,989.28/14,973.60 = 4,790.88/x
  3. Step 3: Cross multiply
    9,989.28x = 14,973.60 × 4,790.88
  4. Step 4: Simplify right side
    9,989.28x = 71,736,720.77
  5. Step 5: Solve for x
    x = 71,736,720.77/9,989.28
  6. Step 6: Final answer
    x = 7,181.37

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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.