Home / 21,285.82-29,374.14-11,854.45

Finding the Fourth Proportional to 21,285.82, 29,374.14 and 11,854.45

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Solution

The fourth proportional to 21,285.82, 29,374.14 and 11,854.45 is: 16,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.82 : 29,374.14 = 11,854.45 : x
  2. Step 2: Convert to fraction form
    21,285.82/29,374.14 = 11,854.45/x
  3. Step 3: Cross multiply
    21,285.82x = 29,374.14 × 11,854.45
  4. Step 4: Simplify right side
    21,285.82x = 348,214,273.92
  5. Step 5: Solve for x
    x = 348,214,273.92/21,285.82
  6. Step 6: Final answer
    x = 16,358.98

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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.