Home / 28,679.64-43,001.10-11,135.04

Finding the Fourth Proportional to 28,679.64, 43,001.10 and 11,135.04

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Solution

The fourth proportional to 28,679.64, 43,001.10 and 11,135.04 is: 16,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.64 : 43,001.10 = 11,135.04 : x
  2. Step 2: Convert to fraction form
    28,679.64/43,001.10 = 11,135.04/x
  3. Step 3: Cross multiply
    28,679.64x = 43,001.10 × 11,135.04
  4. Step 4: Simplify right side
    28,679.64x = 478,818,968.54
  5. Step 5: Solve for x
    x = 478,818,968.54/28,679.64
  6. Step 6: Final answer
    x = 16,695.43

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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.