Home / 13,724.10-18,939.63-7,755.63

Finding the Fourth Proportional to 13,724.10, 18,939.63 and 7,755.63

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Solution

The fourth proportional to 13,724.10, 18,939.63 and 7,755.63 is: 10,702.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.10 : 18,939.63 = 7,755.63 : x
  2. Step 2: Convert to fraction form
    13,724.10/18,939.63 = 7,755.63/x
  3. Step 3: Cross multiply
    13,724.10x = 18,939.63 × 7,755.63
  4. Step 4: Simplify right side
    13,724.10x = 146,888,762.62
  5. Step 5: Solve for x
    x = 146,888,762.62/13,724.10
  6. Step 6: Final answer
    x = 10,702.98

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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.