Home / 21,312.31-29,405.22-12,113.73

Finding the Fourth Proportional to 21,312.31, 29,405.22 and 12,113.73

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Solution

The fourth proportional to 21,312.31, 29,405.22 and 12,113.73 is: 16,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.31 : 29,405.22 = 12,113.73 : x
  2. Step 2: Convert to fraction form
    21,312.31/29,405.22 = 12,113.73/x
  3. Step 3: Cross multiply
    21,312.31x = 29,405.22 × 12,113.73
  4. Step 4: Simplify right side
    21,312.31x = 356,206,895.67
  5. Step 5: Solve for x
    x = 356,206,895.67/21,312.31
  6. Step 6: Final answer
    x = 16,713.67

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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.