Home / 21,152.76-29,191.32-11,722.02

Finding the Fourth Proportional to 21,152.76, 29,191.32 and 11,722.02

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Solution

The fourth proportional to 21,152.76, 29,191.32 and 11,722.02 is: 16,176.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.76 : 29,191.32 = 11,722.02 : x
  2. Step 2: Convert to fraction form
    21,152.76/29,191.32 = 11,722.02/x
  3. Step 3: Cross multiply
    21,152.76x = 29,191.32 × 11,722.02
  4. Step 4: Simplify right side
    21,152.76x = 342,181,236.87
  5. Step 5: Solve for x
    x = 342,181,236.87/21,152.76
  6. Step 6: Final answer
    x = 16,176.67

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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.