Home / 19,311.87-28,964.56-5,457.63

Finding the Fourth Proportional to 19,311.87, 28,964.56 and 5,457.63

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Solution

The fourth proportional to 19,311.87, 28,964.56 and 5,457.63 is: 8,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.87 : 28,964.56 = 5,457.63 : x
  2. Step 2: Convert to fraction form
    19,311.87/28,964.56 = 5,457.63/x
  3. Step 3: Cross multiply
    19,311.87x = 28,964.56 × 5,457.63
  4. Step 4: Simplify right side
    19,311.87x = 158,077,693.13
  5. Step 5: Solve for x
    x = 158,077,693.13/19,311.87
  6. Step 6: Final answer
    x = 8,185.52

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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.