Home / 20,185.90-30,266.70-10,344.40

Finding the Fourth Proportional to 20,185.90, 30,266.70 and 10,344.40

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Solution

The fourth proportional to 20,185.90, 30,266.70 and 10,344.40 is: 15,510.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.90 : 30,266.70 = 10,344.40 : x
  2. Step 2: Convert to fraction form
    20,185.90/30,266.70 = 10,344.40/x
  3. Step 3: Cross multiply
    20,185.90x = 30,266.70 × 10,344.40
  4. Step 4: Simplify right side
    20,185.90x = 313,090,851.48
  5. Step 5: Solve for x
    x = 313,090,851.48/20,185.90
  6. Step 6: Final answer
    x = 15,510.37

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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.