Home / 15,620.50-21,556.29-8,547

Finding the Fourth Proportional to 15,620.50, 21,556.29 and 8,547

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Solution

The fourth proportional to 15,620.50, 21,556.29 and 8,547 is: 11,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.50 : 21,556.29 = 8,547 : x
  2. Step 2: Convert to fraction form
    15,620.50/21,556.29 = 8,547/x
  3. Step 3: Cross multiply
    15,620.50x = 21,556.29 × 8,547
  4. Step 4: Simplify right side
    15,620.50x = 184,241,610.63
  5. Step 5: Solve for x
    x = 184,241,610.63/15,620.50
  6. Step 6: Final answer
    x = 11,794.86

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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.