Home / 21,188.48-29,239.97-12,236.76

Finding the Fourth Proportional to 21,188.48, 29,239.97 and 12,236.76

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Solution

The fourth proportional to 21,188.48, 29,239.97 and 12,236.76 is: 16,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.48 : 29,239.97 = 12,236.76 : x
  2. Step 2: Convert to fraction form
    21,188.48/29,239.97 = 12,236.76/x
  3. Step 3: Cross multiply
    21,188.48x = 29,239.97 × 12,236.76
  4. Step 4: Simplify right side
    21,188.48x = 357,802,434.11
  5. Step 5: Solve for x
    x = 357,802,434.11/21,188.48
  6. Step 6: Final answer
    x = 16,886.65

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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.