Home / 20,214.02-30,324.40-9,120.46

Finding the Fourth Proportional to 20,214.02, 30,324.40 and 9,120.46

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Solution

The fourth proportional to 20,214.02, 30,324.40 and 9,120.46 is: 13,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.02 : 30,324.40 = 9,120.46 : x
  2. Step 2: Convert to fraction form
    20,214.02/30,324.40 = 9,120.46/x
  3. Step 3: Cross multiply
    20,214.02x = 30,324.40 × 9,120.46
  4. Step 4: Simplify right side
    20,214.02x = 276,572,477.22
  5. Step 5: Solve for x
    x = 276,572,477.22/20,214.02
  6. Step 6: Final answer
    x = 13,682.21

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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.