Home / 42,165.78-63,239.36-12,173.51

Finding the Fourth Proportional to 42,165.78, 63,239.36 and 12,173.51

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Solution

The fourth proportional to 42,165.78, 63,239.36 and 12,173.51 is: 18,257.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,165.78 : 63,239.36 = 12,173.51 : x
  2. Step 2: Convert to fraction form
    42,165.78/63,239.36 = 12,173.51/x
  3. Step 3: Cross multiply
    42,165.78x = 63,239.36 × 12,173.51
  4. Step 4: Simplify right side
    42,165.78x = 769,844,665.16
  5. Step 5: Solve for x
    x = 769,844,665.16/42,165.78
  6. Step 6: Final answer
    x = 18,257.57

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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.