Home / 51,431.64-77,153.13-18,147.12

Finding the Fourth Proportional to 51,431.64, 77,153.13 and 18,147.12

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Solution

The fourth proportional to 51,431.64, 77,153.13 and 18,147.12 is: 27,222.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.64 : 77,153.13 = 18,147.12 : x
  2. Step 2: Convert to fraction form
    51,431.64/77,153.13 = 18,147.12/x
  3. Step 3: Cross multiply
    51,431.64x = 77,153.13 × 18,147.12
  4. Step 4: Simplify right side
    51,431.64x = 1,400,107,108.49
  5. Step 5: Solve for x
    x = 1,400,107,108.49/51,431.64
  6. Step 6: Final answer
    x = 27,222.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.