Home / 20,803.13-28,708.36-11,851.01

Finding the Fourth Proportional to 20,803.13, 28,708.36 and 11,851.01

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Solution

The fourth proportional to 20,803.13, 28,708.36 and 11,851.01 is: 16,354.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.13 : 28,708.36 = 11,851.01 : x
  2. Step 2: Convert to fraction form
    20,803.13/28,708.36 = 11,851.01/x
  3. Step 3: Cross multiply
    20,803.13x = 28,708.36 × 11,851.01
  4. Step 4: Simplify right side
    20,803.13x = 340,222,995.93
  5. Step 5: Solve for x
    x = 340,222,995.93/20,803.13
  6. Step 6: Final answer
    x = 16,354.41

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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.