Home / 14,285.31-19,712.48-7,911.76

Finding the Fourth Proportional to 14,285.31, 19,712.48 and 7,911.76

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Solution

The fourth proportional to 14,285.31, 19,712.48 and 7,911.76 is: 10,917.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.31 : 19,712.48 = 7,911.76 : x
  2. Step 2: Convert to fraction form
    14,285.31/19,712.48 = 7,911.76/x
  3. Step 3: Cross multiply
    14,285.31x = 19,712.48 × 7,911.76
  4. Step 4: Simplify right side
    14,285.31x = 155,960,321.92
  5. Step 5: Solve for x
    x = 155,960,321.92/14,285.31
  6. Step 6: Final answer
    x = 10,917.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.