Home / 28,703.61-43,047.60-18,157.80

Finding the Fourth Proportional to 28,703.61, 43,047.60 and 18,157.80

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Solution

The fourth proportional to 28,703.61, 43,047.60 and 18,157.80 is: 27,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.61 : 43,047.60 = 18,157.80 : x
  2. Step 2: Convert to fraction form
    28,703.61/43,047.60 = 18,157.80/x
  3. Step 3: Cross multiply
    28,703.61x = 43,047.60 × 18,157.80
  4. Step 4: Simplify right side
    28,703.61x = 781,649,711.28
  5. Step 5: Solve for x
    x = 781,649,711.28/28,703.61
  6. Step 6: Final answer
    x = 27,231.76

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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.