Home / 15,637.78-21,580.32-8,564.50

Finding the Fourth Proportional to 15,637.78, 21,580.32 and 8,564.50

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Solution

The fourth proportional to 15,637.78, 21,580.32 and 8,564.50 is: 11,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.78 : 21,580.32 = 8,564.50 : x
  2. Step 2: Convert to fraction form
    15,637.78/21,580.32 = 8,564.50/x
  3. Step 3: Cross multiply
    15,637.78x = 21,580.32 × 8,564.50
  4. Step 4: Simplify right side
    15,637.78x = 184,824,650.64
  5. Step 5: Solve for x
    x = 184,824,650.64/15,637.78
  6. Step 6: Final answer
    x = 11,819.11

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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.