Home / 20,203.88-30,315.02-9,113.48

Finding the Fourth Proportional to 20,203.88, 30,315.02 and 9,113.48

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Solution

The fourth proportional to 20,203.88, 30,315.02 and 9,113.48 is: 13,674.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.88 : 30,315.02 = 9,113.48 : x
  2. Step 2: Convert to fraction form
    20,203.88/30,315.02 = 9,113.48/x
  3. Step 3: Cross multiply
    20,203.88x = 30,315.02 × 9,113.48
  4. Step 4: Simplify right side
    20,203.88x = 276,275,328.47
  5. Step 5: Solve for x
    x = 276,275,328.47/20,203.88
  6. Step 6: Final answer
    x = 13,674.37

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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.