Home / 18,987.32-28,467.30-11,590.04

Finding the Fourth Proportional to 18,987.32, 28,467.30 and 11,590.04

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Solution

The fourth proportional to 18,987.32, 28,467.30 and 11,590.04 is: 17,376.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.32 : 28,467.30 = 11,590.04 : x
  2. Step 2: Convert to fraction form
    18,987.32/28,467.30 = 11,590.04/x
  3. Step 3: Cross multiply
    18,987.32x = 28,467.30 × 11,590.04
  4. Step 4: Simplify right side
    18,987.32x = 329,937,145.69
  5. Step 5: Solve for x
    x = 329,937,145.69/18,987.32
  6. Step 6: Final answer
    x = 17,376.71

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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.