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Finding the Fourth Proportional to 27,406.90, 37,820.57 and 15,308.02

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Solution

The fourth proportional to 27,406.90, 37,820.57 and 15,308.02 is: 21,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,406.90 : 37,820.57 = 15,308.02 : x
  2. Step 2: Convert to fraction form
    27,406.90/37,820.57 = 15,308.02/x
  3. Step 3: Cross multiply
    27,406.90x = 37,820.57 × 15,308.02
  4. Step 4: Simplify right side
    27,406.90x = 578,957,985.69
  5. Step 5: Solve for x
    x = 578,957,985.69/27,406.90
  6. Step 6: Final answer
    x = 21,124.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.