Home / 15,637.60-21,579.96-8,564.68

Finding the Fourth Proportional to 15,637.60, 21,579.96 and 8,564.68

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Solution

The fourth proportional to 15,637.60, 21,579.96 and 8,564.68 is: 11,819.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.60 : 21,579.96 = 8,564.68 : x
  2. Step 2: Convert to fraction form
    15,637.60/21,579.96 = 8,564.68/x
  3. Step 3: Cross multiply
    15,637.60x = 21,579.96 × 8,564.68
  4. Step 4: Simplify right side
    15,637.60x = 184,825,451.81
  5. Step 5: Solve for x
    x = 184,825,451.81/15,637.60
  6. Step 6: Final answer
    x = 11,819.30

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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.