Home / 21,262.40-29,341.41-11,830.76

Finding the Fourth Proportional to 21,262.40, 29,341.41 and 11,830.76

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Solution

The fourth proportional to 21,262.40, 29,341.41 and 11,830.76 is: 16,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.40 : 29,341.41 = 11,830.76 : x
  2. Step 2: Convert to fraction form
    21,262.40/29,341.41 = 11,830.76/x
  3. Step 3: Cross multiply
    21,262.40x = 29,341.41 × 11,830.76
  4. Step 4: Simplify right side
    21,262.40x = 347,131,179.77
  5. Step 5: Solve for x
    x = 347,131,179.77/21,262.40
  6. Step 6: Final answer
    x = 16,326.06

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Half scale
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Double scale
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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.