Home / 28,181.60-38,890.48-16,247.20

Finding the Fourth Proportional to 28,181.60, 38,890.48 and 16,247.20

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Solution

The fourth proportional to 28,181.60, 38,890.48 and 16,247.20 is: 22,421.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.60 : 38,890.48 = 16,247.20 : x
  2. Step 2: Convert to fraction form
    28,181.60/38,890.48 = 16,247.20/x
  3. Step 3: Cross multiply
    28,181.60x = 38,890.48 × 16,247.20
  4. Step 4: Simplify right side
    28,181.60x = 631,861,406.66
  5. Step 5: Solve for x
    x = 631,861,406.66/28,181.60
  6. Step 6: Final answer
    x = 22,421.06

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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.