Home / 14,003.40-19,317.78-11,929.80

Finding the Fourth Proportional to 14,003.40, 19,317.78 and 11,929.80

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Solution

The fourth proportional to 14,003.40, 19,317.78 and 11,929.80 is: 16,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.40 : 19,317.78 = 11,929.80 : x
  2. Step 2: Convert to fraction form
    14,003.40/19,317.78 = 11,929.80/x
  3. Step 3: Cross multiply
    14,003.40x = 19,317.78 × 11,929.80
  4. Step 4: Simplify right side
    14,003.40x = 230,457,251.84
  5. Step 5: Solve for x
    x = 230,457,251.84/14,003.40
  6. Step 6: Final answer
    x = 16,457.24

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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.