Home / 21,292.50-29,383.65-11,861.67

Finding the Fourth Proportional to 21,292.50, 29,383.65 and 11,861.67

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Solution

The fourth proportional to 21,292.50, 29,383.65 and 11,861.67 is: 16,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.50 : 29,383.65 = 11,861.67 : x
  2. Step 2: Convert to fraction form
    21,292.50/29,383.65 = 11,861.67/x
  3. Step 3: Cross multiply
    21,292.50x = 29,383.65 × 11,861.67
  4. Step 4: Simplify right side
    21,292.50x = 348,539,159.70
  5. Step 5: Solve for x
    x = 348,539,159.70/21,292.50
  6. Step 6: Final answer
    x = 16,369.10

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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.