Home / 10,509.86-15,764.73-3,114.36

Finding the Fourth Proportional to 10,509.86, 15,764.73 and 3,114.36

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Solution

The fourth proportional to 10,509.86, 15,764.73 and 3,114.36 is: 4,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.86 : 15,764.73 = 3,114.36 : x
  2. Step 2: Convert to fraction form
    10,509.86/15,764.73 = 3,114.36/x
  3. Step 3: Cross multiply
    10,509.86x = 15,764.73 × 3,114.36
  4. Step 4: Simplify right side
    10,509.86x = 49,097,032.84
  5. Step 5: Solve for x
    x = 49,097,032.84/10,509.86
  6. Step 6: Final answer
    x = 4,671.52

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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.