Home / 19,390.36-26,755.79-10,890.86

Finding the Fourth Proportional to 19,390.36, 26,755.79 and 10,890.86

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Solution

The fourth proportional to 19,390.36, 26,755.79 and 10,890.86 is: 15,027.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.36 : 26,755.79 = 10,890.86 : x
  2. Step 2: Convert to fraction form
    19,390.36/26,755.79 = 10,890.86/x
  3. Step 3: Cross multiply
    19,390.36x = 26,755.79 × 10,890.86
  4. Step 4: Simplify right side
    19,390.36x = 291,393,374.85
  5. Step 5: Solve for x
    x = 291,393,374.85/19,390.36
  6. Step 6: Final answer
    x = 15,027.74

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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.