Home / 20,300.77-28,015.26-11,226.02

Finding the Fourth Proportional to 20,300.77, 28,015.26 and 11,226.02

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Solution

The fourth proportional to 20,300.77, 28,015.26 and 11,226.02 is: 15,492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.77 : 28,015.26 = 11,226.02 : x
  2. Step 2: Convert to fraction form
    20,300.77/28,015.26 = 11,226.02/x
  3. Step 3: Cross multiply
    20,300.77x = 28,015.26 × 11,226.02
  4. Step 4: Simplify right side
    20,300.77x = 314,499,686.89
  5. Step 5: Solve for x
    x = 314,499,686.89/20,300.77
  6. Step 6: Final answer
    x = 15,492.01

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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.