Home / 15,450.86-21,322.96-8,645.64

Finding the Fourth Proportional to 15,450.86, 21,322.96 and 8,645.64

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Solution

The fourth proportional to 15,450.86, 21,322.96 and 8,645.64 is: 11,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.86 : 21,322.96 = 8,645.64 : x
  2. Step 2: Convert to fraction form
    15,450.86/21,322.96 = 8,645.64/x
  3. Step 3: Cross multiply
    15,450.86x = 21,322.96 × 8,645.64
  4. Step 4: Simplify right side
    15,450.86x = 184,350,646.70
  5. Step 5: Solve for x
    x = 184,350,646.70/15,450.86
  6. Step 6: Final answer
    x = 11,931.42

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Double scale
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Similar ratio
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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.