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Finding the Fourth Proportional to 28,703.73, 43,047.80 and 18,157.91

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Solution

The fourth proportional to 28,703.73, 43,047.80 and 18,157.91 is: 27,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.73 : 43,047.80 = 18,157.91 : x
  2. Step 2: Convert to fraction form
    28,703.73/43,047.80 = 18,157.91/x
  3. Step 3: Cross multiply
    28,703.73x = 43,047.80 × 18,157.91
  4. Step 4: Simplify right side
    28,703.73x = 781,657,772.07
  5. Step 5: Solve for x
    x = 781,657,772.07/28,703.73
  6. Step 6: Final answer
    x = 27,231.92

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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.