Home / 10,489.20-15,733.80-2,698.08

Finding the Fourth Proportional to 10,489.20, 15,733.80 and 2,698.08

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Solution

The fourth proportional to 10,489.20, 15,733.80 and 2,698.08 is: 4,047.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,489.20 : 15,733.80 = 2,698.08 : x
  2. Step 2: Convert to fraction form
    10,489.20/15,733.80 = 2,698.08/x
  3. Step 3: Cross multiply
    10,489.20x = 15,733.80 × 2,698.08
  4. Step 4: Simplify right side
    10,489.20x = 42,451,051.10
  5. Step 5: Solve for x
    x = 42,451,051.10/10,489.20
  6. Step 6: Final answer
    x = 4,047.12

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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.