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Finding the Fourth Proportional to 21,615.31, 32,425.62 and 7,386.14

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Solution

The fourth proportional to 21,615.31, 32,425.62 and 7,386.14 is: 11,080.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.31 : 32,425.62 = 7,386.14 : x
  2. Step 2: Convert to fraction form
    21,615.31/32,425.62 = 7,386.14/x
  3. Step 3: Cross multiply
    21,615.31x = 32,425.62 × 7,386.14
  4. Step 4: Simplify right side
    21,615.31x = 239,500,039.88
  5. Step 5: Solve for x
    x = 239,500,039.88/21,615.31
  6. Step 6: Final answer
    x = 11,080.11

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1.5x scale

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.