Home / 13,590.50-18,738.88-12,582.86

Finding the Fourth Proportional to 13,590.50, 18,738.88 and 12,582.86

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Solution

The fourth proportional to 13,590.50, 18,738.88 and 12,582.86 is: 17,349.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.50 : 18,738.88 = 12,582.86 : x
  2. Step 2: Convert to fraction form
    13,590.50/18,738.88 = 12,582.86/x
  3. Step 3: Cross multiply
    13,590.50x = 18,738.88 × 12,582.86
  4. Step 4: Simplify right side
    13,590.50x = 235,788,578.45
  5. Step 5: Solve for x
    x = 235,788,578.45/13,590.50
  6. Step 6: Final answer
    x = 17,349.52

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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.