Home / 15,507.10-21,399.82-8,433.53

Finding the Fourth Proportional to 15,507.10, 21,399.82 and 8,433.53

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Solution

The fourth proportional to 15,507.10, 21,399.82 and 8,433.53 is: 11,638.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.10 : 21,399.82 = 8,433.53 : x
  2. Step 2: Convert to fraction form
    15,507.10/21,399.82 = 8,433.53/x
  3. Step 3: Cross multiply
    15,507.10x = 21,399.82 × 8,433.53
  4. Step 4: Simplify right side
    15,507.10x = 180,476,023.96
  5. Step 5: Solve for x
    x = 180,476,023.96/15,507.10
  6. Step 6: Final answer
    x = 11,638.28

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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.