Home / 20,088.10-27,720.56-11,135.52

Finding the Fourth Proportional to 20,088.10, 27,720.56 and 11,135.52

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Solution

The fourth proportional to 20,088.10, 27,720.56 and 11,135.52 is: 15,366.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.10 : 27,720.56 = 11,135.52 : x
  2. Step 2: Convert to fraction form
    20,088.10/27,720.56 = 11,135.52/x
  3. Step 3: Cross multiply
    20,088.10x = 27,720.56 × 11,135.52
  4. Step 4: Simplify right side
    20,088.10x = 308,682,878.13
  5. Step 5: Solve for x
    x = 308,682,878.13/20,088.10
  6. Step 6: Final answer
    x = 15,366.45

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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.