Home / 12,987.36-19,467.36-5,590.08

Finding the Fourth Proportional to 12,987.36, 19,467.36 and 5,590.08

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Solution

The fourth proportional to 12,987.36, 19,467.36 and 5,590.08 is: 8,379.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.36 : 19,467.36 = 5,590.08 : x
  2. Step 2: Convert to fraction form
    12,987.36/19,467.36 = 5,590.08/x
  3. Step 3: Cross multiply
    12,987.36x = 19,467.36 × 5,590.08
  4. Step 4: Simplify right side
    12,987.36x = 108,824,099.79
  5. Step 5: Solve for x
    x = 108,824,099.79/12,987.36
  6. Step 6: Final answer
    x = 8,379.23

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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.