Home / 21,459.85-29,614.13-12,028.21

Finding the Fourth Proportional to 21,459.85, 29,614.13 and 12,028.21

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Solution

The fourth proportional to 21,459.85, 29,614.13 and 12,028.21 is: 16,598.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.85 : 29,614.13 = 12,028.21 : x
  2. Step 2: Convert to fraction form
    21,459.85/29,614.13 = 12,028.21/x
  3. Step 3: Cross multiply
    21,459.85x = 29,614.13 × 12,028.21
  4. Step 4: Simplify right side
    21,459.85x = 356,204,974.61
  5. Step 5: Solve for x
    x = 356,204,974.61/21,459.85
  6. Step 6: Final answer
    x = 16,598.67

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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.