Home / 42,170.95-63,270.13-12,589.03

Finding the Fourth Proportional to 42,170.95, 63,270.13 and 12,589.03

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Solution

The fourth proportional to 42,170.95, 63,270.13 and 12,589.03 is: 18,887.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,170.95 : 63,270.13 = 12,589.03 : x
  2. Step 2: Convert to fraction form
    42,170.95/63,270.13 = 12,589.03/x
  3. Step 3: Cross multiply
    42,170.95x = 63,270.13 × 12,589.03
  4. Step 4: Simplify right side
    42,170.95x = 796,509,564.67
  5. Step 5: Solve for x
    x = 796,509,564.67/42,170.95
  6. Step 6: Final answer
    x = 18,887.64

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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.