Home / 28,059.96-38,720.90-15,484.76

Finding the Fourth Proportional to 28,059.96, 38,720.90 and 15,484.76

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Solution

The fourth proportional to 28,059.96, 38,720.90 and 15,484.76 is: 21,367.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.96 : 38,720.90 = 15,484.76 : x
  2. Step 2: Convert to fraction form
    28,059.96/38,720.90 = 15,484.76/x
  3. Step 3: Cross multiply
    28,059.96x = 38,720.90 × 15,484.76
  4. Step 4: Simplify right side
    28,059.96x = 599,583,843.48
  5. Step 5: Solve for x
    x = 599,583,843.48/28,059.96
  6. Step 6: Final answer
    x = 21,367.95

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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.