Home / 13,590.91-18,746.80-9,819.61

Finding the Fourth Proportional to 13,590.91, 18,746.80 and 9,819.61

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Solution

The fourth proportional to 13,590.91, 18,746.80 and 9,819.61 is: 13,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.91 : 18,746.80 = 9,819.61 : x
  2. Step 2: Convert to fraction form
    13,590.91/18,746.80 = 9,819.61/x
  3. Step 3: Cross multiply
    13,590.91x = 18,746.80 × 9,819.61
  4. Step 4: Simplify right side
    13,590.91x = 184,086,264.75
  5. Step 5: Solve for x
    x = 184,086,264.75/13,590.91
  6. Step 6: Final answer
    x = 13,544.81

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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.