Home / 15,635.60-21,576.48-8,561.90

Finding the Fourth Proportional to 15,635.60, 21,576.48 and 8,561.90

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Solution

The fourth proportional to 15,635.60, 21,576.48 and 8,561.90 is: 11,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.60 : 21,576.48 = 8,561.90 : x
  2. Step 2: Convert to fraction form
    15,635.60/21,576.48 = 8,561.90/x
  3. Step 3: Cross multiply
    15,635.60x = 21,576.48 × 8,561.90
  4. Step 4: Simplify right side
    15,635.60x = 184,735,664.11
  5. Step 5: Solve for x
    x = 184,735,664.11/15,635.60
  6. Step 6: Final answer
    x = 11,815.07

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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.