Home / 21,052.60-31,562.70-11,818.60

Finding the Fourth Proportional to 21,052.60, 31,562.70 and 11,818.60

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Solution

The fourth proportional to 21,052.60, 31,562.70 and 11,818.60 is: 17,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.60 : 31,562.70 = 11,818.60 : x
  2. Step 2: Convert to fraction form
    21,052.60/31,562.70 = 11,818.60/x
  3. Step 3: Cross multiply
    21,052.60x = 31,562.70 × 11,818.60
  4. Step 4: Simplify right side
    21,052.60x = 373,026,926.22
  5. Step 5: Solve for x
    x = 373,026,926.22/21,052.60
  6. Step 6: Final answer
    x = 17,718.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.