Home / 20,315.22-28,035.02-11,362.53

Finding the Fourth Proportional to 20,315.22, 28,035.02 and 11,362.53

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Solution

The fourth proportional to 20,315.22, 28,035.02 and 11,362.53 is: 15,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.22 : 28,035.02 = 11,362.53 : x
  2. Step 2: Convert to fraction form
    20,315.22/28,035.02 = 11,362.53/x
  3. Step 3: Cross multiply
    20,315.22x = 28,035.02 × 11,362.53
  4. Step 4: Simplify right side
    20,315.22x = 318,548,755.80
  5. Step 5: Solve for x
    x = 318,548,755.80/20,315.22
  6. Step 6: Final answer
    x = 15,680.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.