Home / 15,637.88-21,580.80-8,564.69

Finding the Fourth Proportional to 15,637.88, 21,580.80 and 8,564.69

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Solution

The fourth proportional to 15,637.88, 21,580.80 and 8,564.69 is: 11,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.88 : 21,580.80 = 8,564.69 : x
  2. Step 2: Convert to fraction form
    15,637.88/21,580.80 = 8,564.69/x
  3. Step 3: Cross multiply
    15,637.88x = 21,580.80 × 8,564.69
  4. Step 4: Simplify right side
    15,637.88x = 184,832,883.79
  5. Step 5: Solve for x
    x = 184,832,883.79/15,637.88
  6. Step 6: Final answer
    x = 11,819.56

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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.