Home / 20,140.02-27,792.84-11,187.12

Finding the Fourth Proportional to 20,140.02, 27,792.84 and 11,187.12

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Solution

The fourth proportional to 20,140.02, 27,792.84 and 11,187.12 is: 15,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.02 : 27,792.84 = 11,187.12 : x
  2. Step 2: Convert to fraction form
    20,140.02/27,792.84 = 11,187.12/x
  3. Step 3: Cross multiply
    20,140.02x = 27,792.84 × 11,187.12
  4. Step 4: Simplify right side
    20,140.02x = 310,921,836.22
  5. Step 5: Solve for x
    x = 310,921,836.22/20,140.02
  6. Step 6: Final answer
    x = 15,438.01

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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.