Home / 21,189.33-29,241.95-12,236.67

Finding the Fourth Proportional to 21,189.33, 29,241.95 and 12,236.67

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Solution

The fourth proportional to 21,189.33, 29,241.95 and 12,236.67 is: 16,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.33 : 29,241.95 = 12,236.67 : x
  2. Step 2: Convert to fraction form
    21,189.33/29,241.95 = 12,236.67/x
  3. Step 3: Cross multiply
    21,189.33x = 29,241.95 × 12,236.67
  4. Step 4: Simplify right side
    21,189.33x = 357,824,031.12
  5. Step 5: Solve for x
    x = 357,824,031.12/21,189.33
  6. Step 6: Final answer
    x = 16,886.99

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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.