Home / 13,259.79-19,893.05-3,900.13

Finding the Fourth Proportional to 13,259.79, 19,893.05 and 3,900.13

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Solution

The fourth proportional to 13,259.79, 19,893.05 and 3,900.13 is: 5,851.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.79 : 19,893.05 = 3,900.13 : x
  2. Step 2: Convert to fraction form
    13,259.79/19,893.05 = 3,900.13/x
  3. Step 3: Cross multiply
    13,259.79x = 19,893.05 × 3,900.13
  4. Step 4: Simplify right side
    13,259.79x = 77,585,481.10
  5. Step 5: Solve for x
    x = 77,585,481.10/13,259.79
  6. Step 6: Final answer
    x = 5,851.18

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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.