Home / 15,372.18-21,199.41-11,403.18

Finding the Fourth Proportional to 15,372.18, 21,199.41 and 11,403.18

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Solution

The fourth proportional to 15,372.18, 21,199.41 and 11,403.18 is: 15,725.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.18 : 21,199.41 = 11,403.18 : x
  2. Step 2: Convert to fraction form
    15,372.18/21,199.41 = 11,403.18/x
  3. Step 3: Cross multiply
    15,372.18x = 21,199.41 × 11,403.18
  4. Step 4: Simplify right side
    15,372.18x = 241,740,688.12
  5. Step 5: Solve for x
    x = 241,740,688.12/15,372.18
  6. Step 6: Final answer
    x = 15,725.86

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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.