Home / 17,490.89-26,214.38-13,778.45

Finding the Fourth Proportional to 17,490.89, 26,214.38 and 13,778.45

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Solution

The fourth proportional to 17,490.89, 26,214.38 and 13,778.45 is: 20,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,490.89 : 26,214.38 = 13,778.45 : x
  2. Step 2: Convert to fraction form
    17,490.89/26,214.38 = 13,778.45/x
  3. Step 3: Cross multiply
    17,490.89x = 26,214.38 × 13,778.45
  4. Step 4: Simplify right side
    17,490.89x = 361,193,699.08
  5. Step 5: Solve for x
    x = 361,193,699.08/17,490.89
  6. Step 6: Final answer
    x = 20,650.39

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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.