Home / 28,057.76-38,719.68-15,483.36

Finding the Fourth Proportional to 28,057.76, 38,719.68 and 15,483.36

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Solution

The fourth proportional to 28,057.76, 38,719.68 and 15,483.36 is: 21,367.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.76 : 38,719.68 = 15,483.36 : x
  2. Step 2: Convert to fraction form
    28,057.76/38,719.68 = 15,483.36/x
  3. Step 3: Cross multiply
    28,057.76x = 38,719.68 × 15,483.36
  4. Step 4: Simplify right side
    28,057.76x = 599,510,744.52
  5. Step 5: Solve for x
    x = 599,510,744.52/28,057.76
  6. Step 6: Final answer
    x = 21,367.02

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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.