Home / 28,156.20-38,855.06-16,219.50

Finding the Fourth Proportional to 28,156.20, 38,855.06 and 16,219.50

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Solution

The fourth proportional to 28,156.20, 38,855.06 and 16,219.50 is: 22,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.20 : 38,855.06 = 16,219.50 : x
  2. Step 2: Convert to fraction form
    28,156.20/38,855.06 = 16,219.50/x
  3. Step 3: Cross multiply
    28,156.20x = 38,855.06 × 16,219.50
  4. Step 4: Simplify right side
    28,156.20x = 630,209,645.67
  5. Step 5: Solve for x
    x = 630,209,645.67/28,156.20
  6. Step 6: Final answer
    x = 22,382.62

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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.