Home / 13,590.88-20,391.51-5,276.74

Finding the Fourth Proportional to 13,590.88, 20,391.51 and 5,276.74

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Solution

The fourth proportional to 13,590.88, 20,391.51 and 5,276.74 is: 7,917.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.88 : 20,391.51 = 5,276.74 : x
  2. Step 2: Convert to fraction form
    13,590.88/20,391.51 = 5,276.74/x
  3. Step 3: Cross multiply
    13,590.88x = 20,391.51 × 5,276.74
  4. Step 4: Simplify right side
    13,590.88x = 107,600,610.75
  5. Step 5: Solve for x
    x = 107,600,610.75/13,590.88
  6. Step 6: Final answer
    x = 7,917.12

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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.