Home / 28,157.30-38,852.75-16,218.30

Finding the Fourth Proportional to 28,157.30, 38,852.75 and 16,218.30

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Solution

The fourth proportional to 28,157.30, 38,852.75 and 16,218.30 is: 22,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.30 : 38,852.75 = 16,218.30 : x
  2. Step 2: Convert to fraction form
    28,157.30/38,852.75 = 16,218.30/x
  3. Step 3: Cross multiply
    28,157.30x = 38,852.75 × 16,218.30
  4. Step 4: Simplify right side
    28,157.30x = 630,125,474.23
  5. Step 5: Solve for x
    x = 630,125,474.23/28,157.30
  6. Step 6: Final answer
    x = 22,378.76

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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.