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Finding the Fourth Proportional to 28,962.76, 39,978.90 and 17,627.08

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Solution

The fourth proportional to 28,962.76, 39,978.90 and 17,627.08 is: 24,331.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.76 : 39,978.90 = 17,627.08 : x
  2. Step 2: Convert to fraction form
    28,962.76/39,978.90 = 17,627.08/x
  3. Step 3: Cross multiply
    28,962.76x = 39,978.90 × 17,627.08
  4. Step 4: Simplify right side
    28,962.76x = 704,711,268.61
  5. Step 5: Solve for x
    x = 704,711,268.61/28,962.76
  6. Step 6: Final answer
    x = 24,331.63

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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.