Home / 13,719.72-18,933.36-7,432.32

Finding the Fourth Proportional to 13,719.72, 18,933.36 and 7,432.32

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Solution

The fourth proportional to 13,719.72, 18,933.36 and 7,432.32 is: 10,256.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.72 : 18,933.36 = 7,432.32 : x
  2. Step 2: Convert to fraction form
    13,719.72/18,933.36 = 7,432.32/x
  3. Step 3: Cross multiply
    13,719.72x = 18,933.36 × 7,432.32
  4. Step 4: Simplify right side
    13,719.72x = 140,718,790.20
  5. Step 5: Solve for x
    x = 140,718,790.20/13,719.72
  6. Step 6: Final answer
    x = 10,256.68

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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.