Home / 28,180.73-38,889.84-15,433.68

Finding the Fourth Proportional to 28,180.73, 38,889.84 and 15,433.68

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Solution

The fourth proportional to 28,180.73, 38,889.84 and 15,433.68 is: 21,298.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.73 : 38,889.84 = 15,433.68 : x
  2. Step 2: Convert to fraction form
    28,180.73/38,889.84 = 15,433.68/x
  3. Step 3: Cross multiply
    28,180.73x = 38,889.84 × 15,433.68
  4. Step 4: Simplify right side
    28,180.73x = 600,213,345.81
  5. Step 5: Solve for x
    x = 600,213,345.81/28,180.73
  6. Step 6: Final answer
    x = 21,298.72

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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.