Home / 21,276.40-29,360.64-11,844.76

Finding the Fourth Proportional to 21,276.40, 29,360.64 and 11,844.76

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Solution

The fourth proportional to 21,276.40, 29,360.64 and 11,844.76 is: 16,345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.40 : 29,360.64 = 11,844.76 : x
  2. Step 2: Convert to fraction form
    21,276.40/29,360.64 = 11,844.76/x
  3. Step 3: Cross multiply
    21,276.40x = 29,360.64 × 11,844.76
  4. Step 4: Simplify right side
    21,276.40x = 347,769,734.25
  5. Step 5: Solve for x
    x = 347,769,734.25/21,276.40
  6. Step 6: Final answer
    x = 16,345.33

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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.