Home / 13,719.67-18,933.15-7,432.05

Finding the Fourth Proportional to 13,719.67, 18,933.15 and 7,432.05

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Solution

The fourth proportional to 13,719.67, 18,933.15 and 7,432.05 is: 10,256.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.67 : 18,933.15 = 7,432.05 : x
  2. Step 2: Convert to fraction form
    13,719.67/18,933.15 = 7,432.05/x
  3. Step 3: Cross multiply
    13,719.67x = 18,933.15 × 7,432.05
  4. Step 4: Simplify right side
    13,719.67x = 140,711,985.63
  5. Step 5: Solve for x
    x = 140,711,985.63/13,719.67
  6. Step 6: Final answer
    x = 10,256.22

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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.