Home / 21,188.98-29,242.19-12,236.86

Finding the Fourth Proportional to 21,188.98, 29,242.19 and 12,236.86

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Solution

The fourth proportional to 21,188.98, 29,242.19 and 12,236.86 is: 16,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.98 : 29,242.19 = 12,236.86 : x
  2. Step 2: Convert to fraction form
    21,188.98/29,242.19 = 12,236.86/x
  3. Step 3: Cross multiply
    21,188.98x = 29,242.19 × 12,236.86
  4. Step 4: Simplify right side
    21,188.98x = 357,832,585.12
  5. Step 5: Solve for x
    x = 357,832,585.12/21,188.98
  6. Step 6: Final answer
    x = 16,887.67

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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.