Home / 21,312.06-29,404.87-12,113.49

Finding the Fourth Proportional to 21,312.06, 29,404.87 and 12,113.49

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Solution

The fourth proportional to 21,312.06, 29,404.87 and 12,113.49 is: 16,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.06 : 29,404.87 = 12,113.49 : x
  2. Step 2: Convert to fraction form
    21,312.06/29,404.87 = 12,113.49/x
  3. Step 3: Cross multiply
    21,312.06x = 29,404.87 × 12,113.49
  4. Step 4: Simplify right side
    21,312.06x = 356,195,451.67
  5. Step 5: Solve for x
    x = 356,195,451.67/21,312.06
  6. Step 6: Final answer
    x = 16,713.33

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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.