Home / 15,637.91-21,580.32-8,467.89

Finding the Fourth Proportional to 15,637.91, 21,580.32 and 8,467.89

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Solution

The fourth proportional to 15,637.91, 21,580.32 and 8,467.89 is: 11,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.91 : 21,580.32 = 8,467.89 : x
  2. Step 2: Convert to fraction form
    15,637.91/21,580.32 = 8,467.89/x
  3. Step 3: Cross multiply
    15,637.91x = 21,580.32 × 8,467.89
  4. Step 4: Simplify right side
    15,637.91x = 182,739,775.92
  5. Step 5: Solve for x
    x = 182,739,775.92/15,637.91
  6. Step 6: Final answer
    x = 11,685.69

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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.