Home / 15,632.30-21,572.70-8,558.78

Finding the Fourth Proportional to 15,632.30, 21,572.70 and 8,558.78

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Solution

The fourth proportional to 15,632.30, 21,572.70 and 8,558.78 is: 11,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,632.30 : 21,572.70 = 8,558.78 : x
  2. Step 2: Convert to fraction form
    15,632.30/21,572.70 = 8,558.78/x
  3. Step 3: Cross multiply
    15,632.30x = 21,572.70 × 8,558.78
  4. Step 4: Simplify right side
    15,632.30x = 184,635,993.31
  5. Step 5: Solve for x
    x = 184,635,993.31/15,632.30
  6. Step 6: Final answer
    x = 11,811.19

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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.