Home / 13,313.45-19,936.02-12,919.29

Finding the Fourth Proportional to 13,313.45, 19,936.02 and 12,919.29

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Solution

The fourth proportional to 13,313.45, 19,936.02 and 12,919.29 is: 19,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.45 : 19,936.02 = 12,919.29 : x
  2. Step 2: Convert to fraction form
    13,313.45/19,936.02 = 12,919.29/x
  3. Step 3: Cross multiply
    13,313.45x = 19,936.02 × 12,919.29
  4. Step 4: Simplify right side
    13,313.45x = 257,559,197.51
  5. Step 5: Solve for x
    x = 257,559,197.51/13,313.45
  6. Step 6: Final answer
    x = 19,345.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.