Home / 15,507.15-21,399.44-8,433.87

Finding the Fourth Proportional to 15,507.15, 21,399.44 and 8,433.87

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Solution

The fourth proportional to 15,507.15, 21,399.44 and 8,433.87 is: 11,638.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.15 : 21,399.44 = 8,433.87 : x
  2. Step 2: Convert to fraction form
    15,507.15/21,399.44 = 8,433.87/x
  3. Step 3: Cross multiply
    15,507.15x = 21,399.44 × 8,433.87
  4. Step 4: Simplify right side
    15,507.15x = 180,480,052.86
  5. Step 5: Solve for x
    x = 180,480,052.86/15,507.15
  6. Step 6: Final answer
    x = 11,638.51

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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.