Home / 28,913.64-39,905.10-18,304.26

Finding the Fourth Proportional to 28,913.64, 39,905.10 and 18,304.26

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Solution

The fourth proportional to 28,913.64, 39,905.10 and 18,304.26 is: 25,262.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.64 : 39,905.10 = 18,304.26 : x
  2. Step 2: Convert to fraction form
    28,913.64/39,905.10 = 18,304.26/x
  3. Step 3: Cross multiply
    28,913.64x = 39,905.10 × 18,304.26
  4. Step 4: Simplify right side
    28,913.64x = 730,433,325.73
  5. Step 5: Solve for x
    x = 730,433,325.73/28,913.64
  6. Step 6: Final answer
    x = 25,262.59

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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.